CN104421414B - Axial piston unit - Google Patents
Axial piston unit Download PDFInfo
- Publication number
- CN104421414B CN104421414B CN201410446937.1A CN201410446937A CN104421414B CN 104421414 B CN104421414 B CN 104421414B CN 201410446937 A CN201410446937 A CN 201410446937A CN 104421414 B CN104421414 B CN 104421414B
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- axial piston
- rotary shaft
- hydraulic
- oilhole
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- 239000003921 oil Substances 0.000 claims abstract description 319
- 238000003860 storage Methods 0.000 claims abstract description 29
- 239000010687 lubricating oil Substances 0.000 claims abstract description 16
- 235000015927 pasta Nutrition 0.000 claims abstract description 16
- 238000005470 impregnation Methods 0.000 claims abstract description 6
- 230000010355 oscillation Effects 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 14
- 238000011144 upstream manufacturing Methods 0.000 claims description 12
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims 2
- 230000002035 prolonged effect Effects 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 32
- 238000010168 coupling process Methods 0.000 description 32
- 238000005859 coupling reaction Methods 0.000 description 32
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 description 24
- 238000007598 dipping method Methods 0.000 description 19
- 238000010586 diagram Methods 0.000 description 17
- 238000005461 lubrication Methods 0.000 description 16
- 230000008859 change Effects 0.000 description 13
- 239000000446 fuel Substances 0.000 description 13
- 230000002093 peripheral effect Effects 0.000 description 13
- 239000004519 grease Substances 0.000 description 10
- 238000005192 partition Methods 0.000 description 10
- 230000004308 accommodation Effects 0.000 description 9
- 230000007246 mechanism Effects 0.000 description 8
- 238000000105 evaporative light scattering detection Methods 0.000 description 7
- 239000007921 spray Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 239000011796 hollow space material Substances 0.000 description 5
- 230000007935 neutral effect Effects 0.000 description 5
- 238000009987 spinning Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 4
- 239000002828 fuel tank Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 241001125877 Gobio gobio Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/08—Constructional features providing for lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/0032—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/02—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis with wobble-plate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/18—Lubricating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J1/00—Pistons; Trunk pistons; Plungers
- F16J1/09—Pistons; Trunk pistons; Plungers with means for guiding fluids
Abstract
A kind of axial piston unit, in the axial piston unit, it is provided with the housing for storing the 1st hydraulic axial piston component and the 2nd hydraulic axial piston component：Discharge port, it discharges store oil to outside, marks off a part for above-mentioned 2nd hydraulic axial piston component by the discharge port or mass-impregnation is not impregnated in store oil and above-mentioned 1st hydraulic axial piston component the storage pasta of store oil；With supply oil circuit, it will be guided from the lubricating oil that oil sources supplies towards above-mentioned 1st hydraulic axial piston component.
Description
Technical field
The present invention relates to a kind of axial piston unit, and in the axial piston unit, hydraulic pump and hydraulic motor etc. are more
Individual hydraulic axial piston component is accommodated in the housing for being capable of store oil.
Background technology
It is accommodated in multiple hydraulic axial piston components in the axial piston unit for the housing for being capable of store oil, normally,
By making the above-mentioned multiple axial piston components of the storage oil-impregnated in above-mentioned housing carry out to above-mentioned multiple axial piston components
Lubrication, but in the structure shown here, the problem of such be present：Above-mentioned multiple axial piston components are all by as caused by store oil
Rotational resistance.
In order to improve the problem, it is proposed that such scheme：In above-mentioned hydraulic pump and above-mentioned hydraulic motor with the hydraulic pressure
One orientation of pump and the hydraulic motor in the state than the opposing party by the top be accommodated in the hydraulic pressure of the housing for being capable of store oil without
Level speed change gear in, component above in than above-mentioned hydraulic pump and above-mentioned hydraulic motor hydraulic cylinder it is upper
The low position of ora terminalis sets discharge port (for example, referring to Japanese Unexamined Patent Publication 2001-059561 publications, hereinafter referred to as patent document
1)。
Hydraulic variable speed unit described in above-mentioned patent document 1 is being carried out to above-mentioned hydraulic pump and above-mentioned hydraulic motor
Lubrication while, the structure phase with both above-mentioned hydraulic pump and above-mentioned hydraulic motor to be fully impregnated in store oil
Than, can reduce the rotational resistance of above-mentioned hydraulic pump and above-mentioned hydraulic motor as caused by store oil this point be effective.
However, in the structure described in above-mentioned patent document 1, lower section is located in above-mentioned hydraulic pump and above-mentioned hydraulic motor
Above-mentioned hydraulic motor be fully impregnated in store oil, also a part is impregnated in store oil to above-mentioned hydraulic pump above.
Therefore, from reduce as caused by store oil, above-mentioned hydraulic pump and the rotational resistance of above-mentioned hydraulic motor this sight
Point considers, room for improvement still be present.
The content of the invention
The present invention be in view of above-mentioned conventional art and complete, it is intended that in the 1st hydraulic axial piston component and
2nd hydraulic axial piston component is accommodated in the axial piston unit for the housing for being capable of store oil, effectively can be carried out to upper
State the lubrication of the 1st hydraulic axial piston component and above-mentioned 2nd hydraulic axial piston component, and can be reduced as far as by
The rotation resistance that store oil is caused, above-mentioned 1st hydraulic axial piston component and above-mentioned 2nd hydraulic axial piston component are overall
Power.
In order to achieve the above object, the present invention provides a kind of axial piston unit, and it includes：Housing, it being capable of store oil；
1st rotary shaft, it is supported on above-mentioned housing in a manner of rotating about the axis freely；2nd rotary shaft, it is with positioned at than the above-mentioned 1st
The state of rotary shaft on the lower is supported on above-mentioned housing in a manner of rotating about the axis freely；1st hydraulic axial piston component, its
So that above-mentioned housing can not be accommodated in relative to the state that above-mentioned 1st rotary shaft is rotatably supported on the 1st rotary shaft；With the 2nd
Hydraulic axial piston component, it is received with can not rotatably be supported on the state of the 2nd rotary shaft relative to above-mentioned 2nd rotary shaft
Above-mentioned housing is contained in, the axial piston unit is characterised by that above-mentioned housing is provided with：Discharge port, it is to outside discharge storage
The discharge port of trapped fuel, by the discharge port mark off above-mentioned 2nd hydraulic axial piston component a part or mass-impregnation in storage
Trapped fuel and above-mentioned 1st hydraulic axial piston component are not impregnated in the storage pasta of store oil；With supply oil circuit, it will be from oil sources
The lubricating oil of supply guides towards above-mentioned 1st hydraulic axial piston component.
According to the axial piston unit of the present invention, due to storing the 1st last item to piston component and the work of the 2nd hydraulic axial
The housing of plug member is provided with：Discharge port, it is to the discharge port of outside discharge store oil, and above-mentioned the is marked off by the discharge port
A part or mass-impregnation for 2 hydraulic axial piston components does not impregnate in store oil and above-mentioned 1st hydraulic axial piston component
In the storage pasta of store oil；With supply oil circuit, it is by from the lubricating oil that oil sources supplies towards above-mentioned 1st hydraulic axial piston structure
Part guides, therefore can effectively carry out to above-mentioned 1st hydraulic axial piston component and above-mentioned 2nd hydraulic axial piston component
Lubrication, and above-mentioned 1st hydraulic axial piston component and above-mentioned 2nd liquid as caused by store oil can be reduced as far as
Rotational resistance of the last item to piston component entirety.
Above-mentioned housing can have：Housing body, it is provided with can be for above-mentioned 1st hydraulic axial piston component and above-mentioned
The opening of 2nd hydraulic axial piston component insert；And port block, it is detachably linked in a manner of closing above-mentioned opening
Above-mentioned housing body.
Above-mentioned housing body can have：Perisporium, its extension of axis direction along above-mentioned 2nd rotary shaft, and above-mentioned
The side of axis direction one of 2nd rotary shaft marks off above-mentioned opening；And end wall, it closes above-mentioned 2nd rotary shaft of above-mentioned perisporium
Axis direction another side, the end wall and above-mentioned port block collective effect and be around axis rotation by the above-mentioned 2nd rotation e axle supporting
Turn freely.
Above-mentioned discharge port can with the main view view along above-mentioned 2nd rotary shaft with above-mentioned 2nd hydraulic axial piston
The overlapping mode of component is located at above-mentioned end wall.
Above-mentioned discharge port can be with being lived under the side view of above-mentioned 2nd rotating shaft direct cross with above-mentioned 2nd hydraulic axial
The overlapping mode of plug member is located at above-mentioned perisporium, to replace said structure.
In a technical scheme, above-mentioned 1st rotary shaft is used as the pump shaft linked with driving source place of working, above-mentioned 2nd rotation
Rotating shaft is used as the motor drive shaft of outputting rotary power, above-mentioned 1st hydraulic axial piston component as hydraulic pump and as liquid
At least one party in the above-mentioned 2nd hydraulic axial piston component of pressure motor is volume variable, and the 1st hydraulic axial piston
Component and the 2nd hydraulic axial piston the component fluid in a manner of forming closed-loop path by a pair of working oil circuits connect
Connect.
Preferably, above-mentioned supply oil circuit is configured to receive the supply routine for feeding above-mentioned closed-loop path working oil
In an oily part as above-mentioned lubricating oil.
For example, being provided with supply oil circuit in above-mentioned port block, a side and the above-mentioned oil sources of the supply oil circuit fluidly connect
And the another side of the supply oil circuit fluidly connects via a pair of check valves with above-mentioned a pair of working oil paths.
In this case, make-up oil flow direction upstream is being leaned in a side of above-mentioned supply oil circuit than above-mentioned a pair of check valves
Side fluidly connects with above-mentioned supply oil circuit, and the another side of the supply oil circuit is towards above-mentioned 1st hydraulic axial piston component
It is open.
Above-mentioned 1st hydraulic axial piston component has：Hydraulic cylinder, it relative to above-mentioned 1st rotary shaft can not revolve
The mode turned is supported on the 1st rotary shaft, and around above-mentioned 1st rotary shaft axis formed with multiple cylinder holes；With multiple pistons,
It is accommodated in above-mentioned multiple cylinder holes in a manner of free to advance or retreat, by making the free end of above-mentioned multiple pistons directly or indirectly
With above-mentioned axial piston unit possessed by the 1st hydraulic axial piston component engaged with swash plate, so as to mark off above-mentioned 1st hydraulic pressure
The cubical content of axial piston component.
In this case, above-mentioned supply oil circuit can include：Port block side supplies oil circuit, and it is formed at above-mentioned port block；
Housing body side supplies oil circuit, and it is formed at above-mentioned housing body；Oil circuit is supplied with rotation shaft side, it is formed at above-mentioned 1st rotation
Rotating shaft.
The one end of above-mentioned port block side supply oil circuit is leaning on make-up oil flow direction upstream side than above-mentioned a pair of check valves
Fluidly connected with above-mentioned supply oil circuit, and the other end of port block side supply oil circuit is in the abutting abutted with above-mentioned perisporium
Position opening.
The one end of above-mentioned housing body side supply oil circuit is with the other end fluid with above-mentioned port block side supply oil circuit
The mode of connection is in the abutting portion opening abutted with above-mentioned port block, and the other end of housing body side supply oil circuit
In the sliding contact position opening with above-mentioned 1st rotary shaft sliding contact of above-mentioned end wall.
Above-mentioned rotation shaft side supply oil circuit includes：Oilhole is accessed, the access oilhole is with one end and above-mentioned housing body
Outer surface opening of the mode that the other end of side lubricant passage way fluidly connects in above-mentioned 1st rotary shaft；Axis oilhole, its with
The state that above-mentioned access oilhole fluidly connects extends in the axial direction；With the 1st oilhole, the one end of the 1st oilhole
Fluidly connected with above-mentioned axis oilhole, and the other end of the 1st oilhole above-mentioned multiple pistons free end with
The outer surface opening of near the bonding part of above-mentioned swash plate, above-mentioned 1st rotary shaft.
Preferably, above-mentioned supply oil circuit can have：2nd oilhole, the one end of the 2nd oilhole with it is above-mentioned
Axis oilhole fluidly connects, and the other end of the 2nd oilhole is towards bearing components opening, the bearing components be in order to
Axis direction one end side bearing of above-mentioned 1st rotary shaft is installed on the bearing structure of above-mentioned port block freely to rotate about the axis
Part；With the 3rd oilhole, the one end of the 3rd oilhole and above-mentioned housing body side supply oil circuit or above-mentioned rotation shaft side
Supply oil circuit fluidly connects, and the other end of the 3rd oilhole is towards bearing components opening, the bearing components be in order to
The axis direction another side of above-mentioned 1st rotary shaft is supported and is installed on the bearing structure of above-mentioned end wall freely to rotate about the axis
Part.
Have in above-mentioned swash plate and be supported in a manner of being rotated freely around the axis of oscillation with above-mentioned 1st rotating shaft direct cross
State the base portion of perisporium and connect with being supported on free end of the state of above-mentioned base portion directly or indirectly with above-mentioned multiple pistons
In the case of the swash plate main body of conjunction, it is preferred that above-mentioned supply oil circuit can have the 4th oilhole, the 4th oilhole
One end and above-mentioned housing body side supply oil circuit fluidly connect, and the other end of the 4th oilhole be opened in order to
Above-mentioned base portion is supported and is formed at the support holes of above-mentioned perisporium.
Brief description of the drawings
Fig. 1 is the front view of the axial piston unit of the 1st embodiment of the present invention.
Fig. 2 is the left view of the above-mentioned axial piston unit shown in Fig. 1.
Fig. 3 is the right view of the above-mentioned axial piston unit shown in Fig. 1 and Fig. 2.
Fig. 4 is the sectional view along Fig. 1 IV-IV lines.
Fig. 5 is the sectional view along Fig. 1 V-V lines.
Fig. 6 is the hydraulic circuit diagram of above-mentioned axial piston unit.
Fig. 7 is the enlarged partial sectional view of the axial piston unit of the variation of above-mentioned embodiment.
Fig. 8 is the sectional view along Fig. 5 VIII-VIII lines.
Fig. 9 is the sectional view along Fig. 4 IX-IX lines.
Figure 10 is the sectional view along Fig. 9 X-X lines.
Figure 11 is along the sectional view of Fig. 5 XI-XI lines, represents the hydraulic servomechanism located at above-mentioned axial piston unit
Guiding valve be located at the state of holding position.
Figure 12 is the sectional view along Fig. 5 XII-XII lines.
Figure 13 A and Figure 13 B are sectional views corresponding with Figure 11, represent that above-mentioned guiding valve is located at the 1st position and guarantor respectively
Hold the state of position.
Figure 14 is the sectional view of above-mentioned axial piston unit corresponding with Fig. 8, represents above-mentioned hydraulic servomechanism with from Fig. 8
The 1st shown installment state have rotated the state that the 2nd installment state formed after 180 degree is installed on housing around the 1st rotary shaft.
Figure 15 is the longitudinal cross-sectional side view of the axial piston unit of other variations of above-mentioned 1st embodiment.
Figure 16 is the longitudinal cross-sectional side view of the axial piston unit of the 2nd embodiment of the present invention.
Figure 17 is the hydraulic circuit diagram of the above-mentioned axial piston unit shown in Figure 16.
Figure 18 is the hydraulic circuit diagram of the axial piston unit of the 3rd embodiment of the present invention.
Figure 19 is the longitudinal cross-sectional side view of the above-mentioned axial piston unit shown in Figure 18.
Figure 20 is the hydraulic circuit diagram of the axial piston unit of the variation of above-mentioned 3rd embodiment.
Figure 21 is the hydraulic circuit diagram of the axial piston unit of the 4th embodiment of the present invention.
Embodiment
Embodiment 1
Hereinafter, with reference to the accompanying drawings of an embodiment of the axial piston unit of the present invention.
Front view, left view and the right side that the axial piston unit 1 of present embodiment is shown respectively in Fig. 1~Fig. 3 regard
Figure.
In addition, the sectional view of the IV-IV lines and V-V lines along Fig. 1 is shown respectively in Fig. 4 and Fig. 5.
Moreover, figure 6 illustrates the hydraulic circuit diagram of above-mentioned axial piston unit 1.
As shown in figure 4, above-mentioned axial piston unit 100 includes：Housing 10, it being capable of store oil；1st rotary shaft 50 (1),
It is supported on above-mentioned housing 10 in a manner of rotating about the axis freely；2nd rotary shaft 50 (2), it is with positioned at than the above-mentioned 1st rotation
The state of the position of axle 50 (1) on the lower is supported on above-mentioned housing 10 in a manner of rotating about the axis freely；1st hydraulic axial is lived
Plug member 60 (1), it relative to above-mentioned 1st rotary shaft 50 (1) can not rotatably be supported on the 1st rotary shaft 50 (1)
State is accommodated in above-mentioned housing 10；With the 2nd hydraulic axial piston component 60 (2), it is with can not be relative to above-mentioned 2nd rotary shaft
The state that 50 (2) are rotatably supported on the 2nd rotary shaft 50 (2) is accommodated in above-mentioned housing 10.
The axial piston unit 1 of present embodiment is configured to be used as hydraulic variable speed unit.
That is, it is arranged to：A side in above-mentioned 1st rotary shaft 50 (1) and above-mentioned 2nd rotary shaft 50 (2) is used as place of working
The pump shaft of driving source 900 is linked to, the opposing party uses the motor drive shaft of effect outputting rotary power.
Moreover, it is supported on the above-mentioned 1st hydraulic axial piston component 60 (1) of above-mentioned 1st rotary shaft 50 (1) and is supported on
At least one party in the above-mentioned 2nd hydraulic axial piston component 60 (2) of above-mentioned 2nd rotary shaft 50 (2) is volume variable, and
1st hydraulic axial piston component 60 (1) and the 2nd hydraulic axial piston component 60 (2) are to pass through a pair of working oil circuits 100
And the mode for forming closed-loop path fluidly connects.
In the mode of diagram, it is configured to：Above-mentioned 1st rotary shaft 50 (1) and above-mentioned 2nd rotary shaft 50 (2) are used respectively
Make pump shaft and motor drive shaft, above-mentioned 1st hydraulic axial piston component 60 (1) and above-mentioned 2nd hydraulic axial piston component 60 (2)
It is used separately as hydraulic pump and hydraulic motor.
As shown in Fig. 4~Fig. 6, above-mentioned axial piston unit 1 also has：1st swash plate 70 (1), it marks off above-mentioned 1st liquid
Cubical content of the last item to piston component 60 (1)；With the 2nd swash plate 70 (2), it marks off above-mentioned 2nd hydraulic axial piston component 60
(2) cubical content.
In the present embodiment, as shown in figure 5, above-mentioned 1st swash plate 70 (1) is that can be based on peripheral operation around axis of oscillation
The movable swash plate that R verts, the cubical content of the above-mentioned 1st hydraulic axial piston component 60 (1) as hydraulic pump are variable.
In the present embodiment, in order to effectively to above-mentioned 1st hydraulic axial piston component 60 (1) and above-mentioned 2nd liquid
Last item is lubricated to piston component 60 (2), and reduces above-mentioned hydraulic axial piston component 60 (1), 60 (2) entirety as far as possible
Rotational resistance, using following structures.
That is, on underlying above-mentioned 2nd hydraulic axial piston component 60 (2), it passes through the storage in above-mentioned housing 10
Trapped fuel is lubricated.
Specifically, as shown in Figure 2 to 4, for being configured at presentation to the outside discharge port 11 for discharging above-mentioned store oil
Above-mentioned 1st hydraulic axial piston component 60 (1) is not impregnated in store oil and above-mentioned 2nd hydraulic axial piston component 60 (2)
Thus a part or mass-impregnation, are prevented or reduced by above-mentioned storage in the position for the height that pasta is stored as store oil
The rotational resistance of above-mentioned 1st hydraulic axial piston component 60 (1) caused by oil.
In the present embodiment, as shown in figure 4, above-mentioned discharge port 11 is configured under side view and above-mentioned 2nd hydraulic axis
The position overlapping to piston component 60 (2).
Specifically, as shown in Fig. 4 and Fig. 5 etc., above-mentioned housing 10 has：Housing body 15, it is provided with can be for upper
State the 1st hydraulic axial piston component 60 (1) and the opening 15a of above-mentioned 2nd hydraulic axial piston component 60 (2) insert；And end
Buccal mass 20, it is detachably linked to above-mentioned housing body 15 in a manner of closing above-mentioned opening 15a.
As shown in Fig. 4 and Fig. 5 etc., above-mentioned housing body 15 has：Perisporium 16, it is along above-mentioned 2nd rotary shaft 50 (2)
Axis direction extends, and marks off above-mentioned opening 15a in the side of axis direction one of above-mentioned 2nd rotary shaft 50 (2)；And end wall
17, it closes the axis direction another side of above-mentioned 2nd rotary shaft 50 (2) of above-mentioned perisporium 16, the end wall 17 and above-mentioned port
The collective effect of block 20 and by the supporting of above-mentioned 2nd rotary shaft 50 (2) to rotate about the axis freely.
In the structure shown here, in the present embodiment, as shown in Figure 2 to 4, above-mentioned discharge port 11 rotates with the above-mentioned 2nd
Above-mentioned perisporium is located under the orthogonal side view of axle 50 (2) in a manner of overlapping with above-mentioned 2nd hydraulic axial piston component 60 (2)
16。
In addition, in the mode of diagram, above-mentioned discharge port 11 is configured to and the above-mentioned substantially same height of 2nd rotary shaft 50 (2)
Degree.
On the other hand, on above-mentioned 1st hydraulic axial piston component 60 (1) above, as shown in fig. 6, it is formed
For：One side is lubricated via the supply lines 150 fluidly connected with oil sources.
So, in the present embodiment, in the part or mass-impregnation of above-mentioned 2nd hydraulic axial piston component 60 (2)
It is not impregnated in the height position of such storage pasta of store oil in the above-mentioned 1st hydraulic axial piston component 60 (1) of store oil
Above-mentioned discharge port 11 is installed, on the other hand, is carried out via above-mentioned supply lines 150 to above-mentioned 1st hydraulic axial piston component
The lubrication of 60 (1), thus, effectively ensure to above-mentioned 1st hydraulic axial piston component 60 (1) and above-mentioned 2nd hydraulic axis
To the lubrication of piston component 60 (2), at the same prevent or reduce above-mentioned 1st hydraulic axial piston component 60 (1) by store oil
Caused rotational resistance.
In the present embodiment, as described above, above-mentioned discharge port 11 is located to the above-mentioned perisporium of above-mentioned housing body 15
16, but certainly, the present invention is not limited to which.
For example, it is also possible to above-mentioned discharge port 11 is located to the above-mentioned end wall 17 of above-mentioned housing body 15.
Fig. 7 represents the enlarged partial sectional view located at the variation of above-mentioned end wall 17 by above-mentioned discharge port 11.
Specifically, as shown in figure 4, a side of above-mentioned 1st rotary shaft 50 (1) is supported on via bearing components 55a (1)
The bearing hole 18a (1) of a side the 1st in above-mentioned housing 10 (being in the present embodiment above-mentioned port block 20) is formed, and should
The another side of 1st rotary shaft 50 (1) is supported on to be formed in above-mentioned housing 10 (in present embodiment via bearing components 55b (1)
In be above-mentioned end wall 17) the bearing hole 18b (1) of another side the 1st.
Similarly, a side of above-mentioned 2nd rotary shaft 50 (2) is supported on to be formed in above-mentioned shell via bearing components 55a (2)
The bearing hole 18a (2) of a side the 2nd of body 10 (being in the present embodiment above-mentioned port block 20), and the 2nd rotary shaft 50
(2) it (is in the present embodiment above-mentioned end that another side, which is supported on via bearing components 55b (2) and formed in above-mentioned housing 10,
Wall 17) the bearing hole 18b (2) of another side the 2nd.
Moreover, the above-mentioned 2nd bearing hole 18b (2) of above-mentioned end wall 17 is closed by The lid component 21, the The lid component 21 with load and unload from
Mode such as is installed on above-mentioned end wall 17.
Compared with the above-mentioned axial piston unit 1 of present embodiment, the variation shown in Fig. 7, which has, eliminates above-mentioned excretion
Mouthfuls 11 housing body 15 ' replaces stating housing body 15, and there is the The lid component 21 ' located at discharge port 11 to replace above-mentioned lid structure
Part 21.
According to above-mentioned variation, store oil in above-mentioned housing 10 via above-mentioned 2nd hydraulic axial piston component 60 (2),
The above-mentioned bearing components 55b that above-mentioned 2nd swash plate 70 (2) and the another side to above-mentioned 2nd rotary shaft 50 (2) are supported
(2) discharged from above-mentioned discharge port 11.
In addition, in the variation shown in Fig. 7, the stream for the store oil for leading to above-mentioned discharge port 11 turns into by the above-mentioned 2nd
Rotary shaft 50 (2) and the state of above-mentioned bearing components 55b (2) limitations.
, can be with as shown in fig. 7, in above-mentioned 2nd rotary shaft in the case where store oil is to the flowing difference of above-mentioned discharge port 11
The outer peripheral face of 50 (2) forms the connectivity slot 59 for stepping up and stating bearing components 55b (2) and extending in the axial direction.
Hereinafter, above-mentioned supply lines 150 are illustrated.
In the present embodiment, as shown in fig. 6, above-mentioned supply lines 150 are configured to above-mentioned a pair of working oils circuit
The supply routine 110 of 100 supply working oils receives oil.
It is shown respectively in figs. 8 to 10 along in the VIII-VIII lines in Fig. 5, the IX-IX lines in Fig. 4 and Fig. 9
The sectional view of X-X lines.
As shown in Fig. 5, Fig. 6 and Figure 10, it is provided with above-mentioned port block 20：A pair of working oil paths 101, it forms above-mentioned one
To working oil circuit 100；With supply oil circuit 111, it forms above-mentioned supply routine 110, one end and the oil of the supply routine 110
Source fluidly connects, and the other end fluidly connects via a pair of check valves 115 with above-mentioned a pair of working oils circuit 100.
In the present embodiment, as shown in fig. 6, as above-mentioned oil sources, using the auxiliary driven by above-mentioned driving source 900
Pump.
In addition, as shown in fig. 6, above-mentioned supply routine 110 is set as predetermined hydraulic pressure by overflow valve 112.
In the present embodiment, as shown in fig. 6, above-mentioned a pair of working oils circuit 100 is by being mounted with the height of two-way function
The communication line 105 of pressurized overflow valve 106 and be fluidly coupled to each other, when the hydraulic pressure of the side in above-mentioned a pair of working oils circuit 100
During more than predetermined hydraulic pressure, working oil flows into the working oil circuit 100 of the opposing party from the working oil circuit 100 of one side.
According to the structure, it can effectively prevent above-mentioned a pair of working oils circuit 100 from turning into abnormal pressure.
In the present embodiment, as shown in Figure 10, above-mentioned communication line 105 and above-mentioned high-pressure overflow valve 106 are located at upper
State port block 20.
In the present embodiment, above-mentioned supply lines 150 have the supply oil circuit 155 for being formed at above-mentioned housing 10.
One side of above-mentioned supply oil circuit 155 than above-mentioned a pair of check valves 115 by make-up oil flow direction upstream side with
Above-mentioned supply oil circuit 111 fluidly connects, and the another side of the supply oil circuit 155 is towards above-mentioned 1st hydraulic axial piston structure
Part 60 (1) is open.
The simplification of above-mentioned supply lines 150 can be sought by the structure.
As shown in Fig. 3, Fig. 4 and Fig. 9 etc., above-mentioned supply oil circuit 155 includes：Port block side supplies oil circuit 160, and it is formed
In above-mentioned port block 20；Housing body side supplies oil circuit 165, and it is formed at above-mentioned housing body 15；Oil is supplied with rotation shaft side
Road 170, it is formed at above-mentioned 1st rotary shaft 50 (1).
Specifically, as shown in Fig. 4, Fig. 9 and Figure 10, the one end of above-mentioned supply oil circuit 111 in outer surface opening and
Supply mouth 111a is formed, and the other end is to both direction branch and via above-mentioned a pair of check valves 115 and above-mentioned a pair of works
Make oil circuit 101 to fluidly connect.
As shown in Fig. 4 and Fig. 9, the one end of above-mentioned port block side supply oil circuit 160 is than above-mentioned a pair of check valves 115
Fluidly connected by make-up oil flow direction upstream side and above-mentioned supply oil circuit 111, and port block side supply oil circuit 160 is another
The abutting portion opening that one end abuts in the above-mentioned perisporium 16 with above-mentioned housing body 15.
As shown in figure 4, the one end of above-mentioned housing body side supply oil circuit 165 with above-mentioned port block side to supply oil circuit
The mode that 160 the other end fluidly connects is in the abutting portion opening abutted with above-mentioned port block 20, and the housing body
The other end of side supply oil circuit 165 is being formed at above-mentioned 1st bearing hole 18b (1) and the above-mentioned 1st rotation of above-mentioned end wall 17
The position opening of rotating shaft 50 (1) sliding contact.
Specifically, as shown in Figure 4, etc., above-mentioned housing body side supply oil circuit 165 includes：1st oilhole 166, its with
Above-mentioned port block side supply oil circuit 160 fluidly connects and along the side that extends of axis direction of above-mentioned 1st rotary shaft 50 (1)
Formula is formed at above-mentioned perisporium 16；With the 2nd oilhole 167, the 2nd oilhole 167 fluidly connects with one end and above-mentioned 1st oilhole 166,
And the position of sliding contact of the other end between above-mentioned 1st bearing hole 18b (1) and above-mentioned 1st rotary shaft 50 (1)
The mode of opening is formed at above-mentioned end wall 17.
In addition, in the present embodiment, as shown in figure 9, above-mentioned overflow valve 112 is to can act on above-mentioned 1st oilhole 166
Mode be installed on above-mentioned perisporium 16.
Above-mentioned rotation shaft side supply oil circuit 170 is configured to the profit that will be supplied via above-mentioned housing body side supply oil circuit 165
Lubricating oil guides towards above-mentioned 1st hydraulic axial piston component 60 (1).
Specifically, as shown in Fig. 4, Fig. 5 and Fig. 8, above-mentioned 1st hydraulic axial piston component 60 (1) has：Hydraulic cylinder
Body 61 (1), it is supported on the 1st rotary shaft 50 (1) in a manner of it can not be rotated relative to above-mentioned 1st rotary shaft 50 (1), and
And the multiple cylinder holes configured with the axis around above-mentioned 1st rotary shaft 50 (1)；With multiple pistons 62 (1), it is with free to advance or retreat
Mode is accommodated in above-mentioned multiple cylinder holes.
In addition, above-mentioned 2nd hydraulic axial piston component 60 (2) has with above-mentioned 1st hydraulic axial piston component 60 (1) in fact
Identical structure in matter.
Therefore, the identical reference that end is changed to (2) is labelled with figure.
The side of axis direction one of above-mentioned hydraulic cylinder 61 (1) is supported via distribution valve plate 25 (1) with above-mentioned port block 20
Connect, the free ends of above-mentioned multiple pistons 62 (1) is from above-mentioned multiple cylinder holes to axis direction opposite side (with the above-mentioned phase of port block 20
Anti- side) extension.
The free end of above-mentioned multiple pistons 62 (1) directly or indirectly engages with above-mentioned 1st swash plate 70 (1), above-mentioned more
The advance and retreat scope of individual piston 62 (1) changes according to the tilt angle of above-mentioned 1st swash plate 70 (1), correspondingly, the above-mentioned 1st
The cubical content of hydraulic axial piston component 60 (1) is changed.
In the structure shown here, as shown in Fig. 4 and Fig. 5 etc., above-mentioned rotation shaft side supply oil circuit 170 includes：Access oilhole
171, the side that the access oilhole 171 is fluidly connected with the other end of one end and above-mentioned housing body side lubricant passage way 165
Outer surface opening of the formula in above-mentioned 1st rotary shaft 50 (1)；Axis oilhole 172, it with above-mentioned access oilhole 171 to fluidly connect
State extend along axis direction；With the 1st oilhole 173, one end and the above-mentioned axis oil of the 1st oilhole 173
Hole 172 fluidly connects, and the other end above-mentioned multiple pistons 62 (1) free end and above-mentioned 1st swash plate 70 (1) it is oblique
The outer surface opening of near the bonding part of plate main body 71, above-mentioned 1st rotary shaft 50 (1).
Here, the lubrication that explanation is realized by the lubricating oil supplied from above-mentioned 1st oilhole 173.
As shown in figure 5, above-mentioned axial piston unit 1 also includes：Spring 65 (1), it is to above-mentioned (1) direction of hydraulic cylinder 61
Above-mentioned distribution valve plate 25 (1) force；With spring member to undertake 66 (1), it is located at and above-mentioned end with locking above-mentioned spring 65 (1)
The mode of the end of the opposite side of buccal mass 20 is supported on above-mentioned 1st rotary shaft 50 (1).
That is, above-mentioned hydraulic cylinder 61 (1) with can not relative to above-mentioned 1st rotary shaft 50 (1) rotate and can be along axis
The mode of direction movement is supported on the 1st rotary shaft 50 (1), and the side of axis direction one of the hydraulic cylinder 61 (1) is by above-mentioned bullet
Spring 65 (1) exerts a force and presses above-mentioned distribution valve plate 25 (1).
Specifically, above-mentioned hydraulic cylinder 61 (1) has：Tubular minor diameter part 61a, it is with can not be relative to the above-mentioned 1st
The mode that rotary shaft 50 (1) rotates and can moved in the axial direction is supported on the 1st rotary shaft 50 (1)；With tubular large-diameter portion
61b, it extends from above-mentioned tubular minor diameter part 61a to radial outside.
Above-mentioned tubular large-diameter portion 61b has above-mentioned multiple cylinder holes, and the end face of the side of axis direction one be connected to it is above-mentioned
Distribute valve plate 25 (1).
The end of the above-mentioned tubular minor diameter part 61a side of axis direction one (close to the side of above-mentioned port block 20) is than upper
Axis side is leaned in the end (end abutted with above-mentioned distribution valve plate 25 (1)) for stating the tubular large-diameter portion 61b side of axis direction one
Terminated to another side (side for leaving above-mentioned port block 20), above-mentioned tubular large-diameter portion 61b's is located at the side of axis direction one
The inner peripheral surface of part and the outer peripheral face of above-mentioned 1st rotary shaft 50 (1) between mark off annulus.
Above-mentioned annulus forms the accommodation space of above-mentioned spring 65 (1).
Axis side of the end of above-mentioned tubular minor diameter part 61a axis direction another side than above-mentioned tubular large-diameter portion 61b
More extend to the end of another side to axis direction another side, above-mentioned tubular minor diameter part 61a axis direction another side
Form cyclic lug.
As shown in figure 5, above-mentioned spring member to undertake 66 (1) is the cup-shaped with end wall 66a and surrounding wall portion 66b, should
End wall 66a than above-mentioned tubular minor diameter part 61a by axis direction another side with can not be relative to above-mentioned 1st rotary shaft 50
(1) mode of rotation is supported on the 1st rotary shaft 50 (1), and surrounding wall portion 66b extends from above-mentioned end wall 66a to radial outside
And to the extension of the side of axis direction one around above-mentioned tubular minor diameter part 61a positioned at the part of axis direction another side.
Above-mentioned spring member to undertake 66 (1) is with another in above-mentioned end wall 66a and above-mentioned tubular minor diameter part 61a axis direction
The mode that bag space is formed between the end of one side configures, and forbids above-mentioned tubular minor diameter part 61a another to axis direction
Move side.
In the present embodiment, as shown in FIG. 4 and 5, the swash plate main body 71 of above-mentioned 1st swash plate 70 (1) with it is above-mentioned more
The free end of individual piston 62 (1) engages via bearing components.Above-mentioned bearing components are provided with to be inserted for above-mentioned 1st rotary shaft 50 (1)
Logical central opening.
On the other hand, the above-mentioned surrounding wall portion 66b of above-mentioned spring member to undertake 66 (1) has ring-type inclined plane region, the ring
Shape inclined plane region extends to be located at from the diameter path position smaller than above-mentioned central opening leans on axis side than above-mentioned path position
Position and diameter to a side large-diameter portion position bigger than above-mentioned central opening, from above-mentioned path position towards above-mentioned large-diameter portion
Position is gradually expanding.
In the above-mentioned spring member to undertake 66 (1) with the structure, it is engaged in by above-mentioned ring-type inclined plane region
Central opening is stated, so as to forbid the spring member to undertake 66 (1) to be moved to axis direction another side.
In above-mentioned tubular minor diameter part 61a formed with the through hole along axis direction, inserted with rod in above-mentioned through hole
Shape component 67 (1).
One end side of above-mentioned rod member 67 (1) is protruded into above-mentioned annulus, and another side with it is above-mentioned
The above-mentioned end wall 66a engagements of spring member to undertake 66 (1).
It is accommodated in the side of axis direction one of the above-mentioned spring 65 (1) of above-mentioned annulus and is located at above-mentioned tubular large-diameter portion
Back-up ring 68 (1) engagement of 61b inner peripheral surface, and the axis direction another side of the spring 65 (1) and above-mentioned rod member 67
(1) axis direction one end side engagement, thus above-mentioned hydraulic cylinder 61 (1) is exerted a force to the side of axis direction one.
In addition, in the present embodiment, a side of above-mentioned spring 65 (1) and another side respectively via slip ring with
Above-mentioned back-up ring 68 (1) and above-mentioned rod member 67 (1) engagement.
The other end of above-mentioned 1st oilhole 173 is in a manner of towards above-mentioned bag space in above-mentioned 1st rotary shaft 50
(1) outer surface opening.
Formed with throttle orifice on above-mentioned spring member to undertake 66 (1), the throttle orifice makes above-mentioned bag space towards above-mentioned more
The free end of individual piston 62 (1) and the bonding part of the swash plate main body 71 of the above-mentioned 1st movable swash plate 70 (1) are open-minded.
According to the structure, the oil from above-mentioned 1st oilhole 173 is effectively supplied to above-mentioned hydraulic cylinder 61 (1)
The part (that is, above-mentioned tubular minor diameter part 61a inner peripheral surface) for being supported on above-mentioned 1st rotary shaft 50 (1) and above-mentioned multiple work
Fill in the bonding part of the free end of 62 (1) and the swash plate main body 71 of above-mentioned 1st swash plate 70 (1).
In the present embodiment, as shown in FIG. 4 and 5, above-mentioned supply oil circuit 155 also has：2nd oilhole 174,
It guides lubricating oil towards above-mentioned bearing components 55a (1), and above-mentioned bearing components 55a (1) is in order to by above-mentioned 1st rotary shaft
Axis direction one end side bearing of 50 (1) is installed on the component of above-mentioned port block 20 to rotate about the axis freely；With the 3rd lubrication
Oilhole 175, it guides lubricating oil towards above-mentioned bearing components 55b (1), and above-mentioned bearing components 55b (1) is in order to by above-mentioned
The axis direction another side supporting of 1 rotary shaft 50 (1) is installed on the component of above-mentioned end wall 17 to rotate about the axis freely.
Specifically, as shown in FIG. 4 and 5, the one end of above-mentioned 2nd oilhole 174 and above-mentioned axis oilhole 172
Fluidly connect, and the other end is open towards above-mentioned bearing components 55a (1).
The one end of above-mentioned 3rd oilhole 175 fluidly connects with above-mentioned housing body side supply oil circuit 165, and separately
One end is open towards above-mentioned bearing components 55b (1).
Moreover, in the present embodiment, one end and the above-mentioned housing body side supply oil of above-mentioned 3rd oilhole 175
Road 165 fluidly connects, but can also replace which, and makes the one end of above-mentioned 3rd oilhole 175 and above-mentioned rotation shaft side
Supply oil circuit 170 fluidly connects.
As described above, in the present embodiment, above-mentioned 1st swash plate 70 (1) is that can be based on peripheral operation around swinging axle
The movable swash plate that line R verts.
In the structure shown here, it is preferred that above-mentioned supply oil circuit 155 is configured to also prop up to above-mentioned 1st swash plate 70 (1)
The part supply lubricating oil held.
Specifically, as shown in Fig. 5 and Fig. 8, above-mentioned 1st swash plate 70 (1) has：Base portion 75, it is with around with the above-mentioned 1st
The mode that the orthogonal axis of oscillation R of rotary shaft 50 (1) is rotated freely is supported on above-mentioned perisporium 16；With above-mentioned swash plate main body 71, its
Engaged with being supported on free end of the state of above-mentioned base portion 75 directly or indirectly with above-mentioned multiple pistons 62 (1).
More specifically, in above-mentioned perisporium 16, by with axis of oscillation R on the same axis in a manner of formed with support holes,
Above-mentioned base portion 75 is supported on above-mentioned support holes in a manner of rotating about the axis freely.
In the present embodiment, as shown in Fig. 5 and Fig. 8, above-mentioned 1st swash plate 70 (1) is gudgeon type swash plate.
Therefore, above-mentioned 1st swash plate 70 (1) has and is configured at clamping the state of above-mentioned swash plate main body 71 on axis of oscillation R
A pair of base portions 75,75.
That is, as shown in Fig. 5 and Fig. 8, in the 1st side of the axis of oscillation R directions side of above-mentioned perisporium 16, with it is above-mentioned
The modes of axis of oscillation R on the same axis are formed with the 1st support holes 16a, in the axis of oscillation R opposite sides of above-mentioned perisporium 16
2nd side, by with above-mentioned axis of oscillation R on the same axis in a manner of formed with the 2nd support holes 16b.
In the structure shown here, above-mentioned a pair of base portions 75,75 support via above-mentioned 1st support holes 16a and the above-mentioned 2nd is inserted into
Bearing components 19,19 in the 16b of hole and be supported to rotate about the axis freely.
Moreover, operating physical force of above-mentioned 1st swash plate 70 (1) according to the side for putting on above-mentioned a pair of base portions 75,75, around swing
Axis R verts to side and opposite side.
As shown in Fig. 5~Fig. 8 etc., the axial piston unit 1 of present embodiment has hydraulic servomechanism 500, the hydraulic pressure
Servo control mechanism 500 applies operating physical force to above-mentioned 1st swash plate 70 (1).
On the detailed construction of above-mentioned hydraulic servomechanism 500, behind will be illustrated.
As shown in Fig. 5 and Fig. 8, bear operating physical force one side base portion 75 via link shaft coupling 80 and with around
The mode that axis rotates freely be supported on corresponding to support holes 16a, the base portion 75 of the opposing party via closing with shaft coupling 85 and with
The mode rotated about the axis freely is supported on corresponding support holes 16b.
In addition, in the present embodiment, as shown in Fig. 5 and Fig. 8, the base portion 75 of one side is supported on above-mentioned 1st
Bearing bore 16a, the base portion 75 of above-mentioned the opposing party are supported on above-mentioned 2nd support holes 16b.
As shown in Fig. 5 and Fig. 8, above-mentioned link has the 1st portion 81 for inserting above-mentioned support holes 16a with shaft coupling 80,
The base portion 75 of one side is supported on above-mentioned 1st portion via above-mentioned bearing components 19 in a manner of rotating about the axis freely
81。
In above-mentioned link with shaft coupling 80, in order to allow to be externally entering the base portion 75 of one side, and make the above-mentioned 1st
The outer end-side openings in cylinder portion 81.
Moreover, above-mentioned opening is closed by above-mentioned hydraulic servomechanism 500, the hydraulic servomechanism 500 is with around above-mentioned company
Knot is linked to above-mentioned 1st side with the mode of shaft coupling 80.
As shown in Fig. 5 and Fig. 8, above-mentioned closing has the 2nd He of portion 86 for inserting above-mentioned support holes 16b with shaft coupling 85
Close the outside wall portions 87 of the outer side in above-mentioned 2nd portion 86, the base portion 75 of above-mentioned the opposing party via above-mentioned bearing components 19 with around
The mode that axis rotates freely is supported on above-mentioned 2nd portion 86.
In the present embodiment, as shown in Fig. 5 and Fig. 8, above-mentioned outside wall portions 87 have：Middle section 87a, its close on
State the outer side in the 2nd portion 86；With lug area 87b, it extends from above-mentioned middle section 87a to radial outside.
In the 2nd side of above-mentioned perisporium formed with bolt hole, above-mentioned lug area 87b formed with above-mentioned bolt hole pair
The through hole answered, as shown in figure 3, above-mentioned occlusion shaft coupling 85 is by inserting the bolt 89 of above-mentioned through hole and can load and unload
Mode be installed on above-mentioned 2nd side.
In addition, in the present embodiment, as shown in Fig. 5 and Fig. 8, the above-mentioned axle that is supported to above-mentioned a pair of base portions 75
Bearing member 19 is conical bearing component.
In this case, it is necessary to adjust exactly the above-mentioned bearing components 19 that are supported to the base portion 75 of one side with
Separating distance between the above-mentioned bearing components 19 supported to the base portion 75 of above-mentioned the opposing party.
In the present embodiment, as shown in fig. 5 or the like, by being inserted between above-mentioned lug area 87b and above-mentioned 2nd side
Pad 88 adjusts above-mentioned separating distance.
In the structure shown here, above-mentioned supply oil circuit 155 is configured to the above-mentioned support holes supported to above-mentioned base portion 75
16a, 16b supply lubricating oil.
Specifically, as shown in Fig. 4, Fig. 8 and Fig. 9, above-mentioned supply oil circuit 155 has the 4th oilhole 176, and the 4th
The one end of oilhole 176 fluidly connects with above-mentioned housing body side supply oil circuit 165, and the 4th oilhole 176
The other end is opened on above-mentioned support holes 16a, 16b.
As described above, in the present embodiment, above-mentioned housing body 15 formed with above-mentioned 1st support holes 16a and
Above-mentioned 2nd support holes 16b.
Therefore, as shown in figure 8, above-mentioned 4th oilhole 176 includes：1st support holes oilhole 176a, the 1st
The status openings that bearing bore oilhole 176a is fluidly connected with one end with above-mentioned housing body side supply oil circuit 165 are in upper
State the 1st support holes 16a；With the 2nd support holes oilhole 176b, the 2nd support holes are with oilhole 176b with one end
The status openings fluidly connected with above-mentioned housing body side supply oil circuit 165 are in above-mentioned 2nd support holes 16b.
It is provided with above-mentioned 1st portion 81 of above-mentioned link shaft coupling 80：1st endless groove 81a, it is formed at outer peripheral face；
With the 1st insertion oilhole 81b, it is connected above-mentioned 1st endless groove 81a and the internal flow in above-mentioned 1st portion 81.
It is provided with above-mentioned 2nd portion 86 of above-mentioned closing shaft coupling 85：2nd endless groove 86a, it is formed at outer peripheral face；
With the 2nd insertion oilhole 86b, it is connected above-mentioned 2nd endless groove 86a and the internal flow in above-mentioned 2nd portion 86.
In the case where above-mentioned link shaft coupling 80 is installed on into above-mentioned 1st support holes 16a, above-mentioned 1st endless groove 81a
Configured in a manner of being fluidly connected with above-mentioned 1st support holes with oilhole 176a.
In the case where above-mentioned closing shaft coupling 85 is installed on into above-mentioned 2nd support holes 16b, above-mentioned 2nd endless groove 86a
Configured in a manner of being fluidly connected with above-mentioned 2nd support holes with oilhole 176b.
In addition, in the present embodiment, in order to which above-mentioned link shaft coupling 80 is installed on into above-mentioned 2nd support holes
16b and above-mentioned closing shaft coupling 85 can be installed on above-mentioned 1st support holes 16a, by above-mentioned 1st support holes 16a and
Above-mentioned 2nd support holes 16b internal diameter is arranged to same size, and by the outer of above-mentioned 1st portion 81 and above-mentioned 2nd portion 86
Footpath and internal diameter are arranged to same size.
When above-mentioned link shaft coupling 80 is installed on into above-mentioned 2nd support holes 16b, above-mentioned 1st endless groove 81a with it is above-mentioned
2nd support holes are fluidly connected with oilhole 176b, when above-mentioned closing shaft coupling 85 is installed on into above-mentioned 1st support holes 16a
When, above-mentioned 2nd endless groove 86a is fluidly connected with above-mentioned 1st support holes with oilhole 176a.
Moreover, in the present embodiment, as shown in Fig. 5 and Fig. 8 etc., in the above-mentioned 1st insertion oilhole 81b and above-mentioned the
2 insertion oilhole 86b are provided with throttling and constructed, to seek to be adjusted the lubricants capacity supplied to above-mentioned bearing components 19.
Here, illustrate above-mentioned hydraulic servomechanism 500.
The sectional view of the XI-XI lines and XII-XII lines along Fig. 5 is shown respectively in Figure 11 and Figure 12.
As shown in Fig. 5, Fig. 8 and Figure 11, above-mentioned hydraulic servomechanism 500 includes housing 510, servo piston 530, guiding valve
540th, control member 550 and the pitman arm 560 for linking aforesaid operations component 550 and above-mentioned guiding valve 540.
Above-mentioned housing 510 is installed on above-mentioned housing 10 in a manner of it can load and unload.
In the present embodiment, above-mentioned housing 510 is releasably installed by around above-mentioned link in a manner of shaft coupling 80
In the 1st side of the above-mentioned perisporium 16 of above-mentioned housing body 15.
Specifically, in above-mentioned 1st side formed with bolt hole, as shown in Fig. 2 and Figure 11, in the above-mentioned shape of housing 510
Through hole 518 corresponding to the above-mentioned bolts hole of Cheng Youyu, as shown in figure 12, above-mentioned housing 510 is by being inserted through above-mentioned through hole 518
Bolt 519 and above-mentioned 1st side is installed in a manner of it can load and unload.
As shown in figs. 11 and 12, above-mentioned housing 510 is formed with the accommodation space 515 for storing above-mentioned servo piston 530.
Above-mentioned servo piston 530 to divide in liquid-tight manner in a side of above-mentioned accommodation space 515 and another side respectively
The state for going out the 1st grease chamber 515a and the 2nd grease chamber 515b is accommodated in above-mentioned receipts in a manner of it can move back and forth in the axial direction
Receive in space 515.
As shown in Fig. 8 and Figure 11, above-mentioned housing 510 is also formed with storing the valve chamber 520 of above-mentioned guiding valve 540.
Above-mentioned guiding valve 540 is accommodated in above-mentioned valve chamber 520 in a manner of sliding freely, and is configured to according to it in above-mentioned cunning
Movement in valve chamber 520 come switch relative to above-mentioned 1st grease chamber 515a and above-mentioned 2nd grease chamber 515b pressure oil supply and
Discharge.
Specifically, as shown in Fig. 6, Fig. 8 and Figure 11, above-mentioned housing 510 formed with：Input oil circuit 581, input oil
The one end on road 581 is in the medial surface opening abutted with above-mentioned housing body 15, and the other end and above-mentioned valve chamber 520
Input port 521 fluidly connects；1st oil circuit 582, the 1st mouthful of 522 stream of the one end of the 1st oil circuit 582 and above-mentioned valve chamber 520
Body connects, and the other end fluidly connects with above-mentioned 1st grease chamber 515a；2nd oil circuit 583, the one end of the 2nd oil circuit 583
Fluidly connected with the 2nd mouthful 523 of above-mentioned valve chamber 520, and the other end fluidly connects with above-mentioned 2nd grease chamber 515b；And row
Vent line 584.
In the structure shown here, above-mentioned guiding valve 540 can optionally take following location, i.e. make above-mentioned input port 521 with it is above-mentioned
Fluidly connect and make for 1st mouthful 522 above-mentioned discharge oil circuit 584 and above-mentioned 2nd mouthful of 523 the 1st position fluidly connected, make it is above-mentioned defeated
Entrance 521 fluidly connects and made above-mentioned discharge oil circuit 584 and above-mentioned 1st mouthful 522 the 2 fluidly connected with above-mentioned 2nd mouthful 523
Position and the holding position of above-mentioned 1st mouthful 522 and above-mentioned 2nd mouthful 523 of closing.
Aforesaid operations component 550 is extended outward with one end and the other end place of working is linked to above-mentioned guiding valve
540 state supports are in above-mentioned housing 510.
As shown in Fig. 5 and Fig. 8, in the present embodiment, aforesaid operations component 550 is with parallel with above-mentioned axis of oscillation R
Mode can rotate about the axis and be supported on above-mentioned housing 510 freely.
Above-mentioned pitman arm 560 is so that the rotation around axis of above-mentioned guiding valve 540 and aforesaid operations component 550 is correspondingly moved
Mode both above-mentioned guiding valve 540 and aforesaid operations component 550 place of working are linked up.
Above-mentioned hydraulic servomechanism 500 is configured to：By the way that above-mentioned housing 510 is installed on into above-mentioned housing 10, above-mentioned servo
The place of working of armite 600 of base portion 75 of the piston 530 with being linked to one side links, and the base portion 75 of one side is with connecting
Tie in the link of the place of working of above-mentioned pitman arm 560 of above-mentioned guiding valve 540.
Specifically, as shown in figure 5, the base end part of above-mentioned armite 600 and the base portion of one side 75 link and should
The top ends of armite 600 extend to the radial outside on the basis of axis of oscillation R.
Above-mentioned armite 600 is provided with and connect to the radial outside on the basis of the axis of above-mentioned 1st rotary shaft 50 (1) is prominent
Close convex portion 605 and the coupling recess 610 being recessed to radially inner side.
As shown in figs. 11 and 12, above-mentioned servo piston 530 has：1st large-diameter portion 531 and the 2nd large-diameter portion 532,
It is respectively subjected to above-mentioned 1st grease chamber 515a and above-mentioned 2nd grease chamber 515b hydraulic pressure；With minor diameter part 533, it is big the above-mentioned 1st
The engaging groove 535 of ring-type is formed between footpath portion 531 and above-mentioned 2nd large-diameter portion 532, and by above-mentioned two large-diameter portion 531,532
Link up.
The state that above-mentioned servo piston 530 can be entered with above-mentioned engaging groove 535 is accommodated in above-mentioned accommodation space 515.
Specifically, as shown in figure 5, the face when above-mentioned housing 510 is installed on into above-mentioned housing 10 of above-mentioned accommodation space 515
Have to the side of above-mentioned housing 10 and enter opening 515a, above-mentioned engaging groove 535 can be entered via above-mentioned entrance opening 515a.
In addition, the as shown in figure 5, above-mentioned pitman arm that aforesaid operations component 570 and the place of working of above-mentioned guiding valve 540 are linked
560 are provided with the engagement projection 565 prominent to the radially inner side on the basis of the axis of above-mentioned 1st rotary shaft 50 (1).
In the structure shown here, by the way that above-mentioned housing 510 is installed on into above-mentioned housing 10, the above-mentioned engagement of above-mentioned armite 600
Convex portion 605 engages with above-mentioned engaging groove 535, and the above-mentioned engagement projection 565 of above-mentioned pitman arm 560 and above-mentioned coupling recess
610 engagements.
In the present embodiment, above-mentioned hydraulic servomechanism 500 is configured to receive working oil from above-mentioned supply oil circuit 155
Supply.
Specifically, as shown in figure 8, above-mentioned supply oil circuit 155 has the 1st to take out oilhole 181, the 1st takes out oilhole 181
One end fluidly connected with above-mentioned 4th oilhole 176, and in above-mentioned 1st lateral opening to form the 1st defeated for the other end
Entrance 181a.
Moreover, when above-mentioned housing 510 is installed on into above-mentioned housing 10, above-mentioned input oil circuit 581 and above-mentioned 1st input port
181a is fluidly connected.
In the present embodiment, as shown in figure 11, above-mentioned servo piston 530 and above-mentioned guiding valve 540 are configured to its axis
Direction is parallel to each other, the servo piston 530 and guiding valve 540 be configured to along the direction orthogonal with axis of oscillation R (with
Under, referred to as the 1st direction D1) it is mobile.
As shown in figure 11, above-mentioned pitman arm 560 and above-mentioned armite 600 along with axis of oscillation R and above-mentioned 1st side
The 2nd direction D2 orthogonal to both D1 extends.
Above-mentioned pitman arm 560 is with the 1st coupling position of axis direction side and the link of the place of working of aforesaid operations component 550
And in the state that the 2nd coupling position of axis direction opposite side links with the above-mentioned place of working of armite 600, connect the above-mentioned 1st
The 3rd coupling position tied between position and above-mentioned 2nd coupling position links with the above-mentioned place of working of guiding valve 540.
Above-mentioned hydraulic servomechanism 500 with the structure by it is following it is such in a manner of work.
When never operating aforesaid operations component 550 and above-mentioned servo piston 530 is located at the original state (reference of neutral position
Figure 11) start, around axis to side operate aforesaid operations component 550 when, in above-mentioned 2nd coupling position of above-mentioned pitman arm 560
In the state of substantial position is fixed, above-mentioned 1st coupling position of above-mentioned pitman arm 560 is to the behaviour with aforesaid operations component 550
Make the corresponding direction movement in direction.That is, above-mentioned pitman arm 560 moves around above-mentioned 2nd coupling position.
By the This move of above-mentioned pitman arm 560, above-mentioned guiding valve 540 is moved so as to positioned at above-mentioned to axis direction side
1st position (reference picture 13A).
In this condition, as described above, above-mentioned 1st mouthful 522 fluidly connects with above-mentioned input port 521, and the above-mentioned 2nd
Mouth 523 fluidly connects with above-mentioned discharge oil circuit 584.
Therefore, working oil supplies to above-mentioned 1st grease chamber 515a, and discharges working oil from above-mentioned 2nd grease chamber 515b, above-mentioned
Servo piston 530 moves to axis direction side, and thus, above-mentioned 1st swash plate 70 (1) is via above-mentioned armite 600 and around swing
Axis is to side (such as making the increased direction of volume of above-mentioned 1st hydraulic axial piston component 60 (1)) (reference picture of verting
13A)。
Here, if the movement to axis direction side of above-mentioned armite 600 and above-mentioned servo piston 530 correspondingly moves
Dynamic, then the side in above-mentioned pitman arm 560 present in above-mentioned 2nd coupling position and the movement of above-mentioned armite 600 correspondingly moves
It is dynamic.
By the action of the above-mentioned pitman arm 560, above-mentioned guiding valve 530 is from above-mentioned 1st position to another sidesway of axis direction
Move and be back to holding position (reference picture 13B).
Therefore, above-mentioned 1st mouthful 522 and above-mentioned 2nd mouthful 523 is closed, above-mentioned servo piston 530, i.e. above-mentioned 1st swash plate
70 (1) are maintained at the position.
So, in the present embodiment, by the way that above-mentioned housing 510 is installed on into above-mentioned housing body 15, above-mentioned servo is lived
The above-mentioned armite 600 of 530 side with being linked to above-mentioned a pair of base portions 75 of plug engages, and by aforesaid operations component 550 and
The pitman arm 560 that the above-mentioned place of working of guiding valve 540 links also engages with above-mentioned armite 600, on the other hand, by by above-mentioned housing
510 unload from above-mentioned housing body 15, the engagement of above-mentioned servo piston 530 and above-mentioned pitman arm 560 and above-mentioned armite 600
It is released from.
Therefore, it is possible to easily use above-mentioned 1st swash plate 70 for making movable swash plate by above-mentioned hydraulic servomechanism 500
(1) enter between the mode verted and the mode for making above-mentioned 1st swash plate 70 (1) vert without using above-mentioned hydraulic servomechanism 500
The change of line mode.
In addition, in the present embodiment, on the basis of the axis of above-mentioned 1st rotary shaft 50 (1), in above-mentioned servo piston
530 are provided with the engaging groove 535 to radially inner side opening, and are provided with what is extended to radial outside in above-mentioned armite 600
Engagement projection 605, as long as but above-mentioned servo piston 530 can be with the handling phase relative to above-mentioned housing 10 of above-mentioned housing 510
Answer ground engage, depart from above-mentioned armite 600, be just not limited to the structure.
That is, it is also possible that setting：On the basis of the axis of above-mentioned 1st rotary shaft 50 (1), in above-mentioned servo piston 530
The engagement projection extended to radially inner side is set, and the coupling recess to radial outside opening is set in above-mentioned armite 600.
Similarly, in the present embodiment, on the basis of the axis of above-mentioned 1st rotary shaft 50 (1), in above-mentioned pitman arm
560 set the engagement projection 565 extended to radially inner side, and set connecing to radial outside opening in above-mentioned armite 600
Recess 610 is closed, but the set-up mode can also be replaced, the coupling recess to radially inner side opening is set in above-mentioned pitman arm 560,
And the engagement projection extended to radial outside is set in above-mentioned armite 600.
In the present embodiment, above-mentioned hydraulic servomechanism 500 has neutral position force application mechanism 650.
As shown in Fig. 5 and Figure 12, above-mentioned neutral position force application mechanism 650 has：Supporting arm 660, the supporting arm 660 with
Its base end part is rotatably freely supported on the interior side of aforesaid operations component 550 relative to the inner side of aforesaid operations component 550
State, along radially extending on the basis of the axis of above-mentioned control member 550 in a manner of relative with above-mentioned pitman arm 560；
Arresting lever 670, its be accommodated in a manner of it can move in the axial direction along with aforesaid operations component 550 and above-mentioned supporting
Both arms 660 it is orthogonal direction extension accommodation space, the arresting lever 670 have central portion 671, a pair of axle portions 672 and
A pair of base end parts 673, the central portion 671 have predetermined length in the axial direction, and a pair of axle portions 672 are from above-mentioned central portion
671 extend and diameter is smaller than the diameter of above-mentioned central portion 671 to axis direction both sides, and a pair of base end parts 673 are from above-mentioned one
To axle portion 672 it is each to extension on the outside of axis direction and diameter is bigger than the diameter of above-mentioned axle portion 672；A pair of springs are accepted
Component 680, it is coated at above-mentioned a pair of axle portions 672 in a manner of it can move in the axial direction；A pair of neutral springs 685, its
Above-mentioned a pair of springs member to undertake 680 is exerted a force towards above-mentioned central portion 671；Pin component 690, it is supported on above-mentioned supporting arm
660 free end side, a side of the pin component 690 engaged with above-mentioned pitman arm 560 and the width of another side with it is above-mentioned
Length of the central portion 671 on the axis direction of above-mentioned arresting lever 670 is identical, and the pin component 690 and above-mentioned central portion 671 are together
Clamped by above-mentioned a pair of springs member to undertake 680；Linkage part 695, it has with can not be relative to aforesaid operations component 550
The junction surface 696 that the mode of rotation is supported on the base end part of the control member 550 and extended along above-mentioned pin component 690；With
Torsion spring 700, it has central portion and a pair of free ends, and the central portion is coated at aforesaid operations component 550, a pair of free ends
Portion is from above-mentioned central portion to the radial outside extension using the axis of above-mentioned control member 550 as benchmark, a pair of free ends
Clamp above-mentioned pin component 690 and above-mentioned junction surface.
In the present embodiment, as shown in figure 12, the side of axis direction one of above-mentioned accommodation space is divided by The lid component 710
Go out, position adjustment bolt 715 is screwed with above-mentioned The lid component 710.
The top ends of above-mentioned position adjustment bolt 715 engage with the one end of above-mentioned arresting lever 670, by using upper rheme
Putting adjustment bolt 715 makes above-mentioned arresting lever 670 move in the axial direction, can adjust above-mentioned central portion 671 to the above-mentioned 1st
Position corresponding to the neutral position of swash plate 70 (1).
Moreover, the reference 716 in Figure 12 is the stop nut of fixed above-mentioned position adjustment bolt 715.
In the present embodiment, above-mentioned hydraulic servomechanism 500 is except the 1st installment state (reference picture 8), additionally it is possible to takes
2 installment states, the 1st installment state refer to following state, even if above-mentioned servo piston 530 is engaged in and above-mentioned a pair of base portions 75
In the above-mentioned armite 600 that links of the base portion for being supported on above-mentioned 1st support holes 16a, and be engaged in above-mentioned pitman arm 560
Above-mentioned armite 600, while above-mentioned housing 510 is installed on to the state of above-mentioned housing 10, the 2nd installment state be instigate it is above-mentioned
Servo piston 530 is engaged in the above-mentioned company linked with the base portion for being supported on above-mentioned 2nd support holes 16b in above-mentioned a pair of base portions 75
Arm 600 is tied, and above-mentioned pitman arm 560 is engaged in above-mentioned armite 600, while above-mentioned housing 510 is installed on above-mentioned shell
The state of body 10.
In fig. 14, show above-mentioned when above-mentioned hydraulic servomechanism 500 is installed on above-mentioned housing 10 with the 2nd installment state
The longitudinal section of axial piston unit 1.
As shown in figure 14, above-mentioned link shaft coupling 80 is being installed on above-mentioned 2nd support holes 16b and by above-mentioned closing
In the case of being installed on above-mentioned 1st support holes 16a with shaft coupling 85, above-mentioned armite is linked to via above-mentioned link shaft coupling
80 are supported on above-mentioned 2nd support holes 16b base portion 75.
Above-mentioned servo piston 530 is engaged in the above-mentioned armite 600 under the state, and connect above-mentioned pitman arm 560
Together in above-mentioned armite 600, while above-mentioned housing 510 can be installed on to the 2nd side of above-mentioned housing 10.
In the present embodiment, as shown in Fig. 8 and Figure 14, above-mentioned hydraulic servomechanism 500 during 2 installment state
Posture is that the above-mentioned hydraulic servomechanism 500 when making 1 installment state obtains after above-mentioned 1st rotary shaft 50 (1) rotation 180 degree
Posture.
In this case, above-mentioned hydraulic servomechanism 500 relative to above-mentioned housing 10 relative position in the vertical direction
Put under the 1st installment state and the 2nd installment state on the contrary, but by using following structures, no matter under which installment state
The working oil from above-mentioned supply oil circuit 155 can be supplied to above-mentioned hydraulic servomechanism 500.
That is, as shown in Fig. 8 and Figure 14, above-mentioned supply oil circuit 155 also has the 2nd to take out oilhole 182, and the 2nd takes out oil
The upstream side in hole 182 is opened on above-mentioned 2nd support holes 16b, and the 2nd takes out the downstream of oilhole 182 in above-mentioned 2nd side
It is open and forms the 2nd input port 182a.
As shown in figure 8, under the 1st installment state of above-mentioned hydraulic servomechanism 500, above-mentioned input oil circuit 581 with it is above-mentioned
1st input port 181a is fluidly connected.
That is, under the 1st installment state of above-mentioned hydraulic servomechanism 500, above-mentioned hydraulic servomechanism 500 is via above-mentioned
1 support holes take out the supply of the reception working oil of oilhole 181 with oilhole 176a and the above-mentioned 1st.
On the other hand, as shown in figure 14, under the 2nd installment state of above-mentioned hydraulic servomechanism 500, above-mentioned input oil circuit
581 fluidly connect with above-mentioned 2nd input port 182a.
Above-mentioned 2nd taking-up oilhole 182 is formed as：Above-mentioned 2nd support holes 16b is installed in above-mentioned link shaft coupling 80
When, the upstream side of the 2nd taking-up oilhole 182 fluidly connects with above-mentioned 1st endless groove 81a.
That is, under the 2nd installment state of above-mentioned hydraulic servomechanism 500, above-mentioned hydraulic servomechanism 500 has above-mentioned the
2 support holes oilhole 176b, above-mentioned 1st endless groove 81a and above-mentioned 2nd taking-up oilhole 182 receive the supply of working oil.
In addition, under the 1st installment state of above-mentioned hydraulic servomechanism 500, above-mentioned 2nd taking-up oilhole 182 is sealed by plug
(reference picture 8) is closed, under the 2nd installment state of above-mentioned hydraulic servomechanism 500, above-mentioned 1st taking-up oilhole 181 is closed by plug
(reference picture 14).
In fig. 15, it is illustrated that the axial piston unit 1B of present embodiment others variation longitudinal cross-sectional side view.
In addition, in Figure 15, pair same reference is marked with the component identical component in above-mentioned axial piston unit 1,
Omit detail explanation.
In the above-mentioned variation shown in the present embodiment shown in Fig. 4 etc. and Fig. 7, it is supported on above above-mentioned
The above-mentioned 1st hydraulic axial piston component 60 (1) of 1st rotary shaft 50 (1) is used as hydraulic pump, is supported on underlying above-mentioned
The above-mentioned 2nd hydraulic axial piston component 60 (2) of 2 rotary shafts 50 (2) is used as hydraulic motor.
In contrast, above-mentioned axial piston unit 1B is configured to：It is supported on above-mentioned 1st rotary shaft 50 (1) above
Above-mentioned 1st hydraulic axial piston component 60 (1) be used as hydraulic motor, be supported on underlying above-mentioned 2nd rotary shaft 50 (2)
Above-mentioned 2nd hydraulic axial piston component 60 (2) be used as hydraulic pump.
In addition, as shown in figure 15, the above-mentioned axial piston unit 1B of above-mentioned variation is accommodated in and above-mentioned driving source 900
One Room of the flywheel shell 930 of connection (not shown in fig.15).
Specifically, above-mentioned flywheel shell 930 has：Perisporium 931, it marks off accommodation space；, will with partition wall 935
Above-mentioned accommodation space is divided into the 1st space 930 (1) and the 2nd space 930 (2) in downstream of upstream side in transmission direction.
As shown in figure 15, above-mentioned 1st space 930 (1) is accommodated with the band clutch linked with the output shaft of above-mentioned driving source 900
The flywheel 940 of device 941, clutch output shaft 950 is linked with above-mentioned flywheel 940.
The hollow space 935a marked off in liquid-tight manner relative to above-mentioned 1st space 930 (1) is provided with above-mentioned partition wall 935.
The wheeled speedup tooth of the parallel teeth including gear wheel 961 and little gear 962 is accommodated with above-mentioned hollow space 935a
Train, the gear wheel 961 are supported on above-mentioned clutch output shaft 950, and the little gear 962 is to engage with above-mentioned gear wheel 961
Mode is supported on above-mentioned 2nd rotary shaft 50 (2).
Compared with above-mentioned axial piston unit 1, above-mentioned axial piston unit 1B possesses housing 10B to replace above-mentioned housing
10。
Above-mentioned housing 10B includes：Housing body 15B, it has can be for above-mentioned 1st hydraulic axial piston component 60 (1)
And the opening of above-mentioned 2nd hydraulic axial piston component 60 (2) insert；With port block 20B, it is in a manner of closing above-mentioned opening
Detachably it is linked to above-mentioned housing body 15B.
Above-mentioned port block 20B is except changing this point of the configuration of above-mentioned oil circuit and can connecting with above-mentioned flywheel shell 930
Tie beyond this point, there is the structure substantially the same with above-mentioned port block 20.
Above-mentioned housing body 15B has：Perisporium 16B, it has above-mentioned opening in axis direction side, and around above-mentioned
1st hydraulic axial piston component 60 (1) and above-mentioned 2nd hydraulic axial piston component 60 (2)；It is above-mentioned with end wall 17B, its closing
Perisporium 16B axis direction another side.
Above-mentioned 1st rotary shaft 50 (1) and above-mentioned 2nd rotary shaft 50 (2) are via above-mentioned bearing components 55a (1), 55b
(1), 55a (2), 55b (2) are supported on above-mentioned end wall 17B and above-mentioned port block 20B.
Above-mentioned housing 10B is provided with above-mentioned discharge port 11.
Above-mentioned discharge port 11 is configured at above-mentioned 2nd liquid for showing and being supported on underlying above-mentioned 2nd rotary shaft 50 (2)
Last item to piston component 60 (2) part or all is impregnated and be supported on above-mentioned 1st rotary shaft 50 (1) above
The position of the fuel head of the not impregnated such store oil of above-mentioned 1st hydraulic axial piston component 60 (1).
In addition, in above-mentioned variation, mark off and be supported on above-mentioned 2nd rotary shaft 50 (2) and upper as hydraulic pump
The 2nd swash plate 70 (2) for stating the cubical content of the 2nd hydraulic axial piston component 60 (2) is movable swash plate, marks off and is supported on above-mentioned
1 rotary shaft 50 (1) and the 1st swash plate 70 for being used as the cubical content of the above-mentioned 1st hydraulic axial piston component 60 (1) of hydraulic motor
(1) it is fixed swash plate.
In above-mentioned variation so that above-mentioned housing 10B, to as movable swash plate above-mentioned 2nd swash plate 70 (2) progress
The mode that the part of supporting is also stored for oil lubrication sets the height and position of above-mentioned discharge port 11.
In the mode shown in Figure 15, above-mentioned discharge port 11 is located at the axial location of above-mentioned 2nd rotary shaft 50 (2) substantially
Identical height.
Preferably, it is configured to：Above-mentioned speed increasing gear train is moistened also by the store oil in above-mentioned housing 10B
It is sliding.
Specifically, as shown in figure 15, can above-mentioned partition wall 935 be provided with make above-mentioned housing 10B inner space with
And the intercommunicating pore 935b that above-mentioned hollow space 935a is fluidly connected.
In above-mentioned variation, above-mentioned partition wall 935 has：1st partition wall 936, it is located adjacent to above-mentioned axial piston
Device 1B side；With the 2nd partition wall 937, it between above-mentioned 1st partition wall 936 to form above-mentioned hollow space 935a
Mode left from above-mentioned 1st partition wall 936 to the side opposite with above-mentioned axial piston unit 1B.
Above-mentioned intercommunicating pore 935b is formed at above-mentioned 1st partition wall 936, and above-mentioned intercommunicating pore 935b is via hollow connecting elements
938 and the above-mentioned 2nd bearing hole 18b (2) with being formed at above-mentioned end wall 17B fluidly connects.
Above-mentioned discharge port 11 is located at above-mentioned 2nd partition wall 937.
According to the structure, the lubrication to above-mentioned speed increasing gear train, energy can be carried out by the store oil in above-mentioned housing 10B
It is enough effectively to prevent oil to be trapped in above-mentioned hollow space 935a.
On being supported on the above-mentioned 1st hydraulic axial piston component 60 (1) of above-mentioned 1st rotary shaft 50 (1) above,
It is lubricated via a side and the above-mentioned supply oil circuit 155 that oil sources fluidly connects.This point and above-mentioned axial piston unit 1
Identical, Tu15Zhong pair marks same reference with the component identical component in above-mentioned axial piston unit 1.
In the above-mentioned axial piston unit 1B of above-mentioned variation, it also can effectively ensure to live to above-mentioned 1st hydraulic axial
The lubrication that plug member 60 (1) and above-mentioned 2nd hydraulic axial piston component 60 (2) are carried out, can prevent or reduce the above-mentioned 1st
The rotational resistance as caused by store oil of hydraulic axial piston component 60 (1).
Embodiment 2
Hereinafter, with reference to the accompanying drawings of the other embodiment of the present invention.
In Figure 16 and Figure 17, the axial piston unit 1C of present embodiment longitudinal cross-sectional side view and liquid is shown respectively
Press loop diagram.
In addition, same reference is marked with the component identical component in above-mentioned embodiment 1 in figure pair, it is appropriate to omit
Its explanation.
In the axial piston unit 1C of present embodiment, above-mentioned 1st hydraulic axial piston component 60 (1) and above-mentioned
Both is lubricated 2 hydraulic axial piston components 60 (2) by the oil via supply oil circuit 150C supplies, and is formed at
The discharge port 11 for stating housing 10 configures as follows：Oil is being supplied from above-mentioned supply oil circuit 150C and to above-mentioned 1st hydraulic pressure
After axial piston component 60 (1) and above-mentioned 2nd hydraulic axial piston component 60 (2) are lubricated, above-mentioned shell is stored in
Oily pasta in body 10 is located at than above-mentioned 1st hydraulic axial piston component 60 (1) and above-mentioned 2nd hydraulic axial piston component
The position of 60 (2) on the lower.
Specifically, the axial piston unit 1C of present embodiment includes above-mentioned 1st rotary shaft 50 (1) and the above-mentioned 2nd
Rotary shaft 50 (2), it is supported on the 1st rotary shaft 50 (1) in a manner of it can not be rotated relative to above-mentioned 1st rotary shaft 50 (1)
Above-mentioned 1st hydraulic axial piston component 60 (1) and by can not relative to above-mentioned 2nd rotary shaft 50 (2) rotate in a manner of
It is supported on the above-mentioned 2nd hydraulic axial piston component 60 (2) and above-mentioned 1st hydraulic axial of storage of the 2nd rotary shaft 50 (2)
The above-mentioned housing 10 of piston component 60 (1) and above-mentioned 2nd hydraulic axial piston component 60 (2).
Above-mentioned 1st rotary shaft 50 (1) is carried out in axis direction central portion to above-mentioned 1st hydraulic axial piston component 60 (1)
In the state of supporting, the side of axis direction one is supported on the one end for being formed at above-mentioned housing 10 in a manner of rotating about the axis freely
The bearing hole 18a (1) of side the 1st, another side is supported in a manner of rotating about the axis freely is formed at the another of above-mentioned housing 10
The bearing hole 18b (1) of side the 1st.
Above-mentioned 2nd rotary shaft 50 (2) is carried out in axis direction central portion to above-mentioned 2nd hydraulic axial piston component 60 (2)
The state of supporting, the side of axis direction one are supported on the side for being formed at above-mentioned housing 10 in a manner of rotating about the axis freely
2nd bearing hole 18a (2), another side are supported on the other end for being formed at above-mentioned housing 10 in a manner of rotating about the axis freely
The bearing hole 18b (2) of side the 2nd.
And then above-mentioned axial piston unit 1C is provided with supply oil circuit 150C and above-mentioned discharge port 11.
Above-mentioned supply oil circuit 150C has：Housing side supplies oil circuit 155C, and it with above-mentioned oil sources in a manner of fluidly connecting
It is formed at above-mentioned housing 10；Oil circuit 170C (2) is supplied with the 1st rotation shaft side supply oil circuit 170C (1) and the 2nd rotation shaft side,
1st rotation shaft side supply oil circuit 170C (1) via above-mentioned housing side so as to supply the oily towards the above-mentioned 1st of oil circuit 155C supplies
The mode of hydraulic axial piston component 60 (1) flowing is formed at above-mentioned 1st rotary shaft 50 (1), the 2nd rotation shaft side supply oil circuit
170C (2) via above-mentioned housing side so as to supply the oily towards above-mentioned 2nd hydraulic axial piston component 60 (2) of oil circuit 155C supplies
The mode of flowing is formed at above-mentioned 2nd rotary shaft 50 (2).
In the present embodiment, as shown in figure 16, above-mentioned discharge port 11 configures as follows：Via above-mentioned supply oil
150C supplies in road are oily and to above-mentioned 1st hydraulic axial piston component 60 (1) and above-mentioned 2nd hydraulic axial piston component 60
(2) after being lubricated, in the case where stating axial piston unit 1C setting state, the oily pasta that is stored in above-mentioned housing 10
Leaned on positioned at than above-mentioned 1st hydraulic axial piston component 60 (1) and above-mentioned 2nd hydraulic axial piston component 60 (2) both of which
The position of lower section.
In above-mentioned axial piston unit 1C, also can effectively it carry out to above-mentioned 1st hydraulic axial piston component 60 (1)
And the lubrication of above-mentioned 2nd hydraulic axial piston component 60 (2), above-mentioned 1st hydraulic axial piston structure can be prevented as much as possible
Part 60 (1) and above-mentioned 2nd hydraulic axial piston component 60 (2) bear rotational resistance because of the oil in above-mentioned housing 10.
In the present embodiment, above-mentioned housing side supply oil circuit 155C has：1st rotary shaft ejection end 155C (1),
Its side in the above-mentioned bearing hole 18a (1) of a side the 1st and bearing hole 15b (1) of above-mentioned another side the 1st is (in diagram
It is the above-mentioned bearing hole 18b (1) of another side the 1st in mode) opening；With the 2nd rotary shaft with end 155C (2) is sprayed, it is upper
The side for stating the bearing hole 18a (2) of a side the 2nd and the bearing hole 18b (2) of above-mentioned another side the 2nd (is in the mode of diagram
The above-mentioned bearing hole 18b (2) of another side the 2nd) opening.
On the other hand, above-mentioned 1st rotation shaft side supply oil circuit 170C (1) has：1st access oilhole 171C (1), its with it is upper
State the 1st rotary shaft and fluidly connected with end 155C (1) is sprayed；1st axis oilhole 172C (1), its with the above-mentioned 1st access oilhole
The state that 171C (1) is fluidly connected extends in the axial direction；With the 1st hydraulic axial piston component with oilhole 173C (1), its
One end fluidly connects with above-mentioned 1st axis oilhole 172C (1), and the other end is towards above-mentioned 1st hydraulic axial piston structure
Part 60 (1) is open.
In the present embodiment, above-mentioned 1st hydraulic axial piston component with oilhole 173C (1) the other end upper
State the free end and the above-mentioned 1st positioned at above-mentioned multiple pistons 62 (1) corresponding with the other end of the 1st rotary shaft 50 (1)
Outer surface opening near the engaging zones of swash plate 70 (1).
Above-mentioned 2nd rotation shaft side supply oil circuit 170C (2) has：2nd access oilhole 171C (2), itself and the above-mentioned 2nd rotation
Axle is fluidly connected with end 155C (2) is sprayed；2nd axis oilhole 172C (2), it is flowed with accessing oilhole 171C (2) with the above-mentioned 2nd
The state of body connection extends along axis direction；With the 2nd hydraulic axial piston component oilhole 173C (2), one end
Fluidly connected with above-mentioned 2nd axis oilhole 172C (2) and the other end is towards above-mentioned 2nd hydraulic axial piston component 60 (2)
Opening.
In the present embodiment, above-mentioned 2nd hydraulic axial piston component with oilhole 173C (2) the other end upper
State the free end and the above-mentioned 2nd positioned at above-mentioned multiple pistons 62 (2) corresponding with the other end of the 2nd rotary shaft 50 (2)
Outer surface opening near the engaging zones of swash plate 70 (2).
In the present embodiment, as shown in figure 16, above-mentioned 1st access oilhole 171C (1) is via in above-mentioned 1st rotary shaft 50
(1) in outer peripheral face and the inner peripheral surface of above-mentioned 1st bearing hole 180b (1) corresponding with the 1st access oilhole 171C (1) extremely
Few one it is square into the 1st swivel joint 52C (1) and fluidly connected with above-mentioned 1st rotary shaft with ejection end 155C (1), also,
Above-mentioned 2nd access oilhole 171C (2) accesses oilhole 171C via the outer peripheral face in above-mentioned 2nd rotary shaft 50 (2) and with the 2nd
(2) the 2nd swivel joint 52C (2) that at least one party in the inner peripheral surface of above-mentioned 2nd bearing hole 18b (2) corresponding to is formed and with it is upper
State the 2nd rotary shaft and fluidly connected with end 155C (2) is sprayed.
Moreover, above-mentioned housing side supply oil circuit 155C includes：Upstream side oilhole 155Ca, upstream side oilhole 155Ca's is upper
Trip side fluidly connects with above-mentioned oil sources, and downstream forms above-mentioned 1st rotary shaft and sprays end 155C (1)；And downstream
Oilhole 155Cb, the downstream oilhole 155Cb upstream side and above-mentioned 1st swivel joint 52C (1) fluidly connect, and downstream
Form above-mentioned 2nd rotary shaft and spray end 155C (2).
In the present embodiment, as shown in Figure 16 and Figure 17, above-mentioned supply oil circuit 150C also has the 1st rotary shaft with the
1 oilhole 174C (1) and the 1st rotary shaft the 2nd oilhole 175C (1), the 1st oilhole 174C of the 2nd rotary shaft
And the 2nd oilhole 175C (2) of the 2nd rotary shaft (2).
Above-mentioned 1st rotary shaft supplies oil circuit 155C fluids with the 1st oilhole 174C (1) one end with above-mentioned housing side
Connection, and the other end is open towards bearing components 55b (1), and bearing components 55b (1) is installed on the above-mentioned axle of a side the 1st
It is in bearing bore 18a (1) and the bearing hole 18b (1) of above-mentioned another side the 1st, offer above-mentioned 1st rotary shaft and spray end
The 1st bearing hole (being the above-mentioned bearing hole 18b (1) of another side the 1st in the mode of diagram) of 155C (1) side.
In addition it is also possible to make one end and above-mentioned 1st rotary shaft of above-mentioned 1st rotary shaft with the 1st oilhole 174C (1)
Side supply oil circuit 170C (1) is fluidly connected, replacing making above-mentioned 1st rotary shaft with the 1st oilhole 174C (1) one end and
Above-mentioned housing side supply oil circuit 155C is fluidly connected.
One end and above-mentioned 1st axis oilhole 172C (1) fluid of above-mentioned 1st rotary shaft with the 2nd oilhole 175C (1)
Connection, and the other end direction is installed on above-mentioned the bearing hole 18a (1) of a side the 1st and the bearing hole of above-mentioned another side the 1st
The bearing structure of the 1st bearing hole (being the above-mentioned bearing hole 18a (1) of a side the 1st in the mode of diagram) of 18b (1) the opposing party
Part 55a (1) is open.
Above-mentioned 2nd rotary shaft supplies oil circuit 155C fluids with the 1st oilhole 174C (2) one end with above-mentioned housing side
Connection, and the other end is open towards bearing components 55b (2), and bearing components 55b (2) is installed on the above-mentioned axle of a side the 2nd
It is in bearing bore 18a (2) and the bearing hole 18b (2) of above-mentioned another side the 2nd, offer above-mentioned 2nd rotary shaft and spray end
The 2nd bearing hole (being the above-mentioned bearing hole 18b (2) of another side the 2nd in the mode of diagram) of 155C (2) side.
In addition it is also possible to make one end and above-mentioned 2nd rotary shaft of above-mentioned 2nd rotary shaft with the 1st oilhole 174C (2)
Side supply oil circuit 170C (2) is fluidly connected, replacing making above-mentioned 2nd rotary shaft with the 1st oilhole 174C (2) one end and
Above-mentioned housing side supply oil circuit 155C is fluidly connected.
One end and above-mentioned 2nd axis oilhole 172C (2) fluid of above-mentioned 2nd rotary shaft with the 2nd oilhole 175C (2)
Connection, and the other end direction is installed on above-mentioned the bearing hole 18a (2) of a side the 2nd and the bearing hole of above-mentioned another side the 2nd
The bearing structure of the 2nd bearing hole (being the above-mentioned bearing hole 18a (2) of a side the 2nd in the mode of diagram) of 18b (2) the opposing party
Part 55a (2) is open.
In the present embodiment, above-mentioned supply oil circuit 155C also has to the bearing portions of above-mentioned 1st swash plate 70 (1) and guided
1st swash plate oilhole 176C of lubricating oil.
Above-mentioned 1st swash plate has the structure substantially the same with above-mentioned 4th oilhole 176 with oilhole 176C.
That is, above-mentioned 1st swash plate oilhole 176C includes：1st support holes oilhole, the 1st support holes profit
The state that lubrication hole is fluidly connected with one end and above-mentioned housing side supply oil circuit 165C is in above-mentioned 1st support holes 16a (references
Fig. 8) it is open；With the 2nd support holes oilhole, the 2nd support holes oilhole is supplied with one end and above-mentioned housing side
It is open to the state that oil circuit 165C is fluidly connected in above-mentioned 2nd support holes 16b (reference picture 8).
Embodiment 3
Hereinafter, with reference to the accompanying drawings of another embodiment of the invention.
In Figure 18 and Figure 19, the axial piston unit 1D of present embodiment hydraulic circuit diagram is shown respectively and indulges
Cut open side view.
In addition, same reference is marked with the component identical component in above-mentioned embodiment in figure pair and is suitably omitted
Detail explanation.
The axial piston unit 1D of present embodiment is configured to the storage oil mass in housing 10 being energetically maintained as follows
Such desired oil mass, the desired oil mass are：So that at least a portion is impregnated in the hydraulic axial piston of store oil
Component (hereinafter referred to as impregnating hydraulic axial piston component) can be effectively lubricated by above-mentioned store oil, and can
Reduce the oil mass of the rotational resistance as caused by above-mentioned store oil.
In addition, above-mentioned dipping hydraulic axial piston component refers to be used as benchmark using the setting state of above-mentioned axial piston unit
Underlying hydraulic axial piston component, in the present embodiment, above-mentioned 2nd hydraulic axial piston component 60 (2) equivalent to
The dipping hydraulic axial piston component.
Specifically, as shown in Figure 1 and Figure 2, above-mentioned axial piston unit 1D includes：Above-mentioned housing 10, it can store
Trapped fuel；Rotary shaft (being in the present embodiment above-mentioned 2nd rotary shaft 50 (2)), it is supported in a manner of rotating about the axis freely
In above-mentioned housing 10；Above-mentioned dipping hydraulic axial piston component (is in the present embodiment above-mentioned 2nd hydraulic axial piston component
60 (2)), it relative to above-mentioned rotary shaft can not rotatably be supported on the state of above-mentioned rotary shaft, to soak at least partially
Stain is accommodated in above-mentioned housing in the mode of the store oil in above-mentioned housing 10, with a manner of forming closed-loop path with the dipping
Other hydraulic axial piston components that hydraulic axial piston component fluidly connects (hereinafter referred to as live by collective effect hydraulic axial
Plug member) collective effect and form Hyaulic infinite variable speed mechanism；Replenishment pump 910, it is by replenishment pump with power source (in this reality
Apply in mode as above-mentioned driving source 900) driving rotate to be operated, attract oil and to above-mentioned closed-loop path from fuel tank 490
Spray make-up oil；Overflow valve 112 is fed, it sets the hydraulic pressure of above-mentioned make-up oil；Relief line 113, it will come from above-mentioned supply
The oil overflow of overflow valve 112 guides into above-mentioned housing 10；Pumping-out line 480, it discharges the store oil in above-mentioned housing 10；Row
Go out pump 460, it is placed in above-mentioned pumping-out line 480, is driven by excavationg pump with power source 470 to rotate to be operated；
Control device 400；Oil mass detection part is fed, it detects the supply oil mass that above-mentioned replenishment pump 910 is sprayed；Change with discharge oil mass
Become part, it changes the discharge oil mass discharged from above-mentioned housing 10 by above-mentioned excavationg pump 460, and above-mentioned control device 400 is formed
To be entered based on the supply oil mass detected by above-mentioned supply oil mass detection part to change the work of part to above-mentioned discharge oil mass
Row control.
, can be with the spinning movement state of above-mentioned dipping hydraulic axial piston component independently by above-mentioned shell according to the structure
It is maintained desired oil mass storage oil mass constant in body 10.
Therefore, it is possible to which such state is presented：Above-mentioned dipping hydraulic axial piston component can be reduced as far as because upper
State the store oil in housing 10 and bear the situation of rotational resistance, can effectively carry out by the store oil in above-mentioned housing 10
The lubrication to above-mentioned dipping hydraulic axial piston component 60 (1) realized.
In addition, according to present embodiment, no matter by above-mentioned fuel tank 490 relative to above-mentioned axial piston unit 1D be arranged to why
The height of sample, it can obtain the effect above.
The effect above is described in detail.
As above-mentioned embodiment 1, by will be configured located at the discharge port 11 of above-mentioned housing 10 in desired height,
The pasta for the store oil for being stored in above-mentioned housing 10 can be adjusted.
However, in above-mentioned 1st hydraulic axial piston component 60 (1) and/or above-mentioned 2nd hydraulic axial piston component 60
(2) under the working condition of above-mentioned Hyaulic infinite variable speed mechanism for carrying out spinning movement, due to above-mentioned 1st hydraulic axial piston structure
The spinning movement of part 60 (1) and/or above-mentioned 2nd hydraulic axial piston component 60 (2), the store oil in above-mentioned housing 10 occur
Flowing, the pasta of above-mentioned store oil change.
Moreover, with above-mentioned 1st hydraulic axial piston component 60 (1) and/or above-mentioned 2nd hydraulic axial piston component 60
(2) correspondingly, the degree of the flowing of above-mentioned store oil also changes rotary speed.In addition, fed to closed-loop path
The remaining oil of make-up oil be stored in housing 10, but the Fuel Oil Remaining is as the rotating speed of replenishment pump 910 uprises and increases.That is housing
The pasta of store oil in 10 changes also according to the change of the operating condition of power source 900.
Therefore, even if above-mentioned discharge port 11 is located at into desired height, also it is difficult to the storage in above-mentioned housing 10 sometimes
Trapped fuel amount be maintained desired oil mass, i.e., effectively above-mentioned dipping hydraulic axial piston component can be lubricated and
The oil mass that above-mentioned dipping hydraulic axial piston component bears the situation of rotational resistance because of above-mentioned store oil can be efficiently reduced.
In addition, in order to set height to adjust the storage pasta in above-mentioned housing 10 by above-mentioned discharge port 11, also need
Above-mentioned fuel tank 490 is arranged on to the position lower than above-mentioned discharge port 11.
In contrast, in the present embodiment, as described above, above-mentioned control device 400 is configured to be based on by above-mentioned benefit
It is controlled to the supply oil mass that oil mass detection part is detected to change the work of part to above-mentioned discharge oil mass.
Here, from above-mentioned replenishment pump 910 spray make-up oil with remaining oil from above-mentioned overflow valve 112 via above-mentioned overflow line
The state that road 113 is expelled in above-mentioned housing 10 supplies to above-mentioned closed-loop path, the storage oil mass being stored in above-mentioned housing 10
It is generally proportionate with the oil mass of above-mentioned make-up oil.
Therefore, by being changed based on the supply oil mass detected by above-mentioned supply oil mass detection part to above-mentioned discharge oil mass
The work for becoming part is controlled, can be with above-mentioned 1st hydraulic axial piston component 60 (1) and/or above-mentioned 2nd hydraulic axial
Storage oil mass in above-mentioned housing 10 is independently effectively maintained institute by the working conditions such as the rotary speed of piston component 60 (2)
Desired oil mass.
Moreover, according to said structure, setting height that can be with above-mentioned fuel tank 490 relative to above-mentioned axial piston unit 1D
Independently obtain the effect above.
As shown in figure 18, the above-mentioned axial piston unit 1D of present embodiment possesses flowmeter 410, and the flowmeter 410 is pacified
It is placed in the supply routine 110 that will be supplied from the above-mentioned make-up oil that above-mentioned replenishment pump 910 sprays to above-mentioned closed-loop path, above-mentioned stream
Gauge 410 is used as above-mentioned supply oil mass detection part.
Said structure can be replaced, and is provided with above-mentioned axial piston unit 1D and directly or indirectly detects above-mentioned supply
The replenishment pump rotary speed detection part (not shown) of the rotary speed of pump 910, will represent the rotation of above-mentioned replenishment pump 910 in advance
The data storage of relation between speed and above-mentioned supply oil mass is in above-mentioned control device 400.
In this case, above-mentioned replenishment pump rotary speed detection part and above-mentioned control device 400 are used as above-mentioned supply
Oil mass detection part.
As shown in figure 18, in the present embodiment, above-mentioned replenishment pump 910 is used as above-mentioned 1st hydraulic pressure of above-mentioned hydraulic pump
The driving source 900 of axial piston component 60 (1) is driven to be operated.
Therefore, above-mentioned replenishment pump rotary speed detection part can be configured to detect the output rotation of above-mentioned driving source 900
Speed.
In addition, as shown in figure 18, it is variable that the above-mentioned axial piston unit 1D of present embodiment possesses output rotary speed
Discharge pump motor 470 and be used as above-mentioned excavationg pump power source.
In this case, above-mentioned discharge pump motor 470 also serves as above-mentioned discharge oil mass change part.
That is, above-mentioned control device 400 is logical to change by the output rotary speed for adjusting above-mentioned discharge pump motor 470
Cross the discharge oil mass that above-mentioned excavationg pump 460 is discharged from above-mentioned housing 10.
Said structure can also be substituted, as shown in figure 20, above-mentioned excavationg pump 460 is passed through capacity adjusting mechanism for volume
461 and variable volume variable.
The discharge pump motor for driving above-mentioned excavationg pump 460 is provided with the axial piston unit 1D ' of the variation
470 and the capacity adjustment motor 471 that makes above-mentioned capacity adjusting mechanism 461 work.
In the variation shown in Figure 20, above-mentioned capacity adjustment motor 471 and above-mentioned volume guiding mechanism 461 are used
Make above-mentioned discharge oil mass and change part.
Moreover, in the variation shown in Figure 20, above-mentioned discharge pump motor 470 can be output rotation speed constant
Constant speed output type.
Preferably, above-mentioned axial piston unit 1D may be constructed to be repaiied according to the oil temperature of the store oil in above-mentioned housing 10
The storage oil mass that should be just stored in above-mentioned housing 10.
That is, oily viscosity step-down with the rising of oil temperature.Moreover, during the sticky step-down of store oil, it is difficult to should carry out
The slidably contacting section of the above-mentioned dipping hydraulic axial piston component of lubrication forms oil film.
In consideration of it, the oil for detecting the storage oil temperature in above-mentioned housing 10 is provided with above-mentioned axial piston unit 1D
Temperature meter (not shown), above-mentioned control device 400 are configured to based on the above-mentioned storage oil temperature detected by above-mentioned oil thermometer come corresponding
The fuel allowance for the store oil being stored in above-mentioned housing 10 is modified, and the work for changing part to above-mentioned discharge oil mass is carried out
Control is so that above-mentioned storage oil mass is maintained revised fuel allowance.
Specifically, above-mentioned fuel allowance can be modified when above-mentioned storage oil temperature uprises to cause above-mentioned housing
Store oil quantitative change in 10 is more.
In addition it is also possible to carried out in a manner of making above-mentioned fuel allowance continuously increased to be uprised with above-mentioned storage oil temperature
Amendment, can also periodically correct above-mentioned fuel allowance, which is as follows：It is warm from the 1st in above-mentioned storage oil temperature
Spend between T1 to the 2nd temperature T2, with the 1st above-mentioned fuel allowance of correction amendment, arrived in above-mentioned storage oil temperature more than the 2nd temperature T2
Between 3rd temperature T3, with the 2nd above-mentioned fuel allowance of correction amendment.
In the same manner as above-mentioned embodiment 1, the above-mentioned axial piston unit 1D of present embodiment be provided integrally with positioned at
State than above-mentioned dipping hydraulic axial piston component position by the top is accommodated in the above-mentioned collective effect hydraulic pressure of above-mentioned housing 10
Axial piston component.
That is, as shown in Figure 18 and Figure 19, above-mentioned axial piston component 1D also has：Other rotary shafts are (in this implementation
It is above-mentioned 1st rotary shaft 50 (1) in mode), it is located at the above-mentioned rotary shaft than supporting above-mentioned dipping hydraulic axial piston component
The position of (being in the present embodiment above-mentioned 2nd rotary shaft 50 (2)) by the top；With above-mentioned collective effect hydraulic axial piston structure
Part (being in the present embodiment above-mentioned 1st hydraulic axial piston component 60 (1)), it relative to above-mentioned other can not to revolve
The state that rotating shaft is rotatably supported on other rotary shafts is accommodated in above-mentioned housing 10.
And then in the same manner as above-mentioned embodiment 1, above-mentioned axial piston unit 1D has：1st swash plate 70 of movable type
(1), it changes the volume of above-mentioned collective effect hydraulic axial piston component above；With hydraulic servomechanism 500, it is produced
Life makes the operating physical force that above-mentioned 1st swash plate 70 (1) verts.
Moreover, in the same manner as above-mentioned embodiment 1, via above-mentioned supply oil circuit 150 to above-mentioned collective effect hydraulic axial
Piston component supplies lubricating oil, and also supplies working oil to above-mentioned hydraulic servomechanism 500 via above-mentioned supply oil circuit 150.
Embodiment 4
Hereinafter, with reference to the accompanying drawings of another embodiment of the invention.
Figure 21 illustrates the axial piston unit 1E of present embodiment hydraulic circuit diagram.
Moreover, same reference is marked with the component identical component in above-mentioned embodiment in figure pair and is suitably omitted
Detail explanation.
The above-mentioned axial piston unit of present embodiment is configured in above-mentioned housing 10 based on the storage pasta in housing
Storage oil mass be energetically maintained following desired oil mass, the desired oil mass is：So that above-mentioned dipping hydraulic axial
Piston component is effectively lubricated by above-mentioned store oil, and can reduce the oil of the rotational resistance as caused by above-mentioned store oil
Amount.
Specifically, compared with the above-mentioned axial piston unit 1D of above-mentioned embodiment 3, above-mentioned axial piston unit 1E tools
There is oil gauge 420 to replace above-mentioned supply oil mass detection part, there is housing 10E to replace above-mentioned housing 10.
As shown in figure 21, compared with above-mentioned housing 10, above-mentioned housing 10E has housing body 15E to replace above-mentioned housing
Main body 15.
Above-mentioned housing 10E is configured to principal space 11a and auxiliary space 11b, and principal space 11a stores above-mentioned dipping hydraulic pressure
Axial piston component (being in the present embodiment above-mentioned 2nd hydraulic axial piston component 60 (2)), auxiliary space 11b via every
Wall 12 and demarcated with above-mentioned principal space 11a, and can make oil between above-mentioned principal space 11a via communication path 13
Circulation.
Above-mentioned oil gauge 420 is configured at above-mentioned auxiliary space 11b with the state electrically connected with above-mentioned control device 400.
In the present embodiment, above-mentioned control device 400 is configured to based on the store oil detected by above-mentioned oil gauge 420
The position in face is controlled to change the work of part to above-mentioned discharge oil mass.
, can be effectively by the store oil in above-mentioned housing 10E according to the above-mentioned axial piston unit 1E with the structure
Desired oil mass is maintained, the desired oil mass is：Effectively above-mentioned dipping hydraulic axial piston component can be carried out
Lubrication, and the oil mass of the rotational resistance of above-mentioned dipping hydraulic axial piston component can be efficiently reduced.
That is, store oil in above-mentioned housing 10E by being impregnated in the above-mentioned dipping hydraulic axis of the store oil at least partially
Spinning movement to piston component (being in the present embodiment above-mentioned 2nd hydraulic axial piston component 60 (2)) is flowed.
Therefore, the pasta of above-mentioned store oil is being accommodated with the above-mentioned principal space 11a of above-mentioned dipping hydraulic axial piston component
Inside significantly change, but as described above, be configured with the above-mentioned auxiliary space 11b of above-mentioned oil gauge 420 to be flowed with above-mentioned principal space 11a
The state of body connection is separated by above-mentioned next door 12 with above-mentioned principal space 11a.
, also can be by above-mentioned pasta even if above-mentioned dipping hydraulic axial piston component carries out spinning movement according to the structure
Meter 420 detects to the storage pasta in the above-mentioned auxiliary space 11b for the flowing for preventing or reducing store oil exactly, energy
It is enough that the storage oil mass in above-mentioned housing 10E is effectively maintained desired oil mass.
Claims (9)
1. a kind of axial piston unit, it includes：Housing, it being capable of store oil；1st rotary shaft, it is to rotate about the axis freely
Mode be supported on above-mentioned housing；2nd rotary shaft, its with positioned at than above-mentioned 1st rotary shaft state on the lower to be revolved around axis
The mode turned freely is supported on above-mentioned housing；1st hydraulic axial piston component, it is with can not be relative to above-mentioned 1st rotary shaft
The state for being rotatably supported on the 1st rotary shaft is accommodated in above-mentioned housing；With the 2nd hydraulic axial piston component, it is with can not
The state for being rotatably supported on the 2nd rotary shaft relative to above-mentioned 2nd rotary shaft is accommodated in above-mentioned housing, the axial piston dress
Put and be characterised by,
Above-mentioned 1st hydraulic axial piston component has：Hydraulic cylinder, its with can not relative to above-mentioned 1st rotary shaft rotate
Mode is supported on the 1st rotary shaft, and around above-mentioned 1st rotary shaft axis formed with multiple cylinder holes；With multiple pistons, its with
Mode free to advance or retreat is accommodated in above-mentioned multiple cylinder holes, by make the free ends of above-mentioned multiple pistons directly or indirectly with it is upper
State the 1st hydraulic axial piston component possessed by axial piston unit to be engaged with swash plate, so as to mark off above-mentioned 1st hydraulic axial
The cubical content of piston component,
Above-mentioned housing is provided with：Discharge port, it discharges store oil to outside；With supply oil circuit, its lubricating oil that will be supplied from oil sources
Guided towards above-mentioned 1st hydraulic axial piston component,
The discharge port be configured to mark off above-mentioned 2nd hydraulic axial piston component a part or mass-impregnation in store oil
And above-mentioned 1st hydraulic axial piston component is not impregnated in the storage pasta of store oil,
Above-mentioned supply oil circuit includes：Oilhole is accessed, the access oilhole is in a manner of receiving from the lubricating oil of oil sources supply above-mentioned
The outer surface opening of 1st rotary shaft；Axis oilhole, it is prolonged in the axial direction with the state fluidly connected with above-mentioned access oilhole
Stretch；With the 1st oilhole, the one end of the 1st oilhole fluidly connects with above-mentioned axis oilhole, and the 1st lubricating oil
The other end in hole is near the free end of above-mentioned multiple pistons and the bonding part of above-mentioned swash plate, above-mentioned 1st rotary shaft
Outer surface opening.
2. axial piston unit according to claim 1, it is characterised in that
Above-mentioned housing has：Housing body, it is provided with can be for above-mentioned 1st hydraulic axial piston component and above-mentioned 2nd hydraulic pressure
The opening of axial piston component insert；And port block, it is detachably linked to above-mentioned shell in a manner of closing above-mentioned opening
Phosphor bodies,
Above-mentioned housing body has：Perisporium, its extension of axis direction along above-mentioned 2nd rotary shaft, and in above-mentioned 2nd rotary shaft
The side of axis direction one mark off above-mentioned opening；And end wall, it closes the axis direction of above-mentioned 2nd rotary shaft of above-mentioned perisporium
Above-mentioned 2nd rotation e axle supporting is to rotate about the axis freely with above-mentioned port block collective effect by another side, the end wall,
Above-mentioned discharge port is with overlapping with above-mentioned 2nd hydraulic axial piston component under the main view view along above-mentioned 2nd rotary shaft
Mode be located at above-mentioned end wall.
3. axial piston unit according to claim 1, it is characterised in that
Above-mentioned housing has：Housing body, it is provided with can be for above-mentioned 1st hydraulic axial piston component and above-mentioned 2nd hydraulic pressure
The opening of axial piston component insert；And port block, it is detachably linked to above-mentioned shell in a manner of closing above-mentioned opening
Phosphor bodies,
Above-mentioned housing body has：Perisporium, its extension of axis direction along above-mentioned 2nd rotary shaft, and in above-mentioned 2nd rotary shaft
The side of axis direction one mark off above-mentioned opening；And end wall, it closes the axis direction of above-mentioned 2nd rotary shaft of above-mentioned perisporium
Above-mentioned 2nd rotation e axle supporting is to rotate about the axis freely with above-mentioned port block collective effect by another side, the end wall,
Above-mentioned discharge port with the side view of above-mentioned 2nd rotating shaft direct cross with above-mentioned 2nd hydraulic axial piston component weight
Folded mode is located at above-mentioned perisporium.
4. the axial piston unit according to Claims 2 or 3, it is characterised in that
Above-mentioned 1st rotary shaft is used as the pump shaft that place of working is linked to driving source, and it is dynamic that above-mentioned 2nd rotary shaft is used as output rotation
The motor drive shaft of power,
Above-mentioned 1st hydraulic axial piston component as hydraulic pump and above-mentioned 2nd hydraulic axial piston as hydraulic motor
At least one party in component is volume variable, and the 1st hydraulic axial piston component and the 2nd hydraulic axial piston component
Fluidly connected in a manner of forming closed-loop path by a pair of working oil circuits,
Above-mentioned supply oil circuit reception is to the oily part in the supply routine of above-mentioned closed-loop path supply working oil as above-mentioned
Lubricating oil.
5. axial piston unit according to claim 4, it is characterised in that
Above-mentioned port block is provided with supply oil circuit, a side of the supply oil circuit is fluidly connected with above-mentioned oil sources and the supply
The another side of oil circuit fluidly connects via a pair of check valves and with above-mentioned a pair of working oil paths,
Make-up oil flow direction upstream side and above-mentioned make-up oil are being leaned in one side of above-mentioned supply oil circuit than above-mentioned a pair of check valves
Road fluidly connects, and the another side of the supply oil circuit opens towards above-mentioned 1st hydraulic axial piston component.
6. axial piston unit according to claim 5, it is characterised in that
Above-mentioned supply oil circuit includes：Port block side supplies oil circuit, and it is formed at above-mentioned port block；Housing body side supplies oil circuit,
It is formed at above-mentioned housing body；Oil circuit is supplied with rotation shaft side, it is formed at above-mentioned 1st rotary shaft,
The one end of above-mentioned port block side supply oil circuit than above-mentioned a pair of check valves by make-up oil flow direction upstream side with it is upper
State supply oil circuit to fluidly connect, and the other end of port block side supply oil circuit is in the abutting portion abutted with above-mentioned perisporium
Opening,
The one end of above-mentioned housing body side supply oil circuit is fluidly connected with supplying the other end of oil circuit with above-mentioned port block side
Mode in the abutting portion opening abutted with above-mentioned port block, and the housing body side supply oil circuit the other end upper
State the sliding contact position opening with above-mentioned 1st rotary shaft sliding contact of end wall.
7. axial piston unit according to claim 6, it is characterised in that
Above-mentioned supply oil circuit has：2nd oilhole, the one end of the 2nd oilhole fluidly connect with above-mentioned axis oilhole,
And the other end of the 2nd oilhole is towards bearing components opening, the bearing components are in order to by above-mentioned 1st rotary shaft
Axis direction one end side bearing is installed on the bearing components of above-mentioned port block to rotate about the axis freely；With the 3rd oilhole,
The one end of 3rd oilhole supplies oil circuit with above-mentioned housing body side or above-mentioned rotation shaft side supply oil circuit fluidly connects,
And the other end of the 3rd oilhole is towards bearing components opening, the bearing components are in order to by above-mentioned 1st rotary shaft
The supporting of axis direction another side is installed on the bearing components of above-mentioned end wall to rotate about the axis freely.
8. axial piston unit according to claim 6, it is characterised in that
Above-mentioned swash plate has：Base portion, it is supported in a manner of being rotated freely around the axis of oscillation with above-mentioned 1st rotating shaft direct cross
Above-mentioned perisporium；With swash plate main body, it is to be supported on freedom of the state of above-mentioned base portion directly or indirectly with above-mentioned multiple pistons
End engages,
Above-mentioned supply oil circuit has the 4th oilhole, the one end of the 4th oilhole and above-mentioned housing body side supply oil circuit
Fluidly connect, and the other end of the 4th oilhole is opened on and is formed at above-mentioned to be supported to above-mentioned base portion
The support holes of perisporium.
9. axial piston unit according to claim 7, it is characterised in that
Above-mentioned swash plate has：Base portion, it is supported in a manner of being rotated freely around the axis of oscillation with above-mentioned 1st rotating shaft direct cross
Above-mentioned perisporium；With swash plate main body, it is to be supported on freedom of the state of above-mentioned base portion directly or indirectly with above-mentioned multiple pistons
End engages,
Above-mentioned supply oil circuit has the 4th oilhole, the one end of the 4th oilhole and above-mentioned housing body side supply oil circuit
Fluidly connect, and the other end of the 4th oilhole is opened on and is formed at above-mentioned to be supported to above-mentioned base portion
The support holes of perisporium.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-185824 | 2013-09-09 | ||
| JP2013185824A JP6281931B2 (en) | 2013-09-09 | 2013-09-09 | Axial piston device |
| JP2013221223A JP6217007B2 (en) | 2013-10-24 | 2013-10-24 | Axial piston device |
| JP2013-221223 | 2013-10-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104421414A CN104421414A (en) | 2015-03-18 |
| CN104421414B true CN104421414B (en) | 2018-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410446937.1A Active CN104421414B (en) | 2013-09-09 | 2014-09-03 | Axial piston unit |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US9822876B2 (en) |
| CN (1) | CN104421414B (en) |
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| JP6330130B2 (en) * | 2014-01-28 | 2018-05-30 | 株式会社 神崎高級工機製作所 | Axial piston device |
| US10570893B2 (en) * | 2015-05-29 | 2020-02-25 | Kanzaki Kokyukoki Mfg. Co., Ltd. | Hydraulic pump and detachable servo unit |
| JP6473473B2 (en) * | 2017-03-27 | 2019-02-20 | 本田技研工業株式会社 | Valve structure and hydraulic circuit using the same |
| JP2019065799A (en) * | 2017-10-03 | 2019-04-25 | Smc株式会社 | Pressure intensifying device |
| CN110994870A (en) * | 2019-12-11 | 2020-04-10 | 安徽德科电气科技有限公司 | Disk type low-power permanent magnet machine |
| ES2944561T3 (en) * | 2021-01-28 | 2023-06-22 | Danfoss Power Solutions Aps | pressure exchanger |
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| CN102840299A (en) * | 2011-06-24 | 2012-12-26 | 罗伯特·博世有限公司 | Hydrostatic traction drive |
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|---|---|---|---|---|
| US453852A (en) * | 1891-06-09 | berey | ||
| JP2001059561A (en) * | 1999-08-23 | 2001-03-06 | Yanmar Diesel Engine Co Ltd | Fluid machine incorporating rotary body |
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2014
- 2014-09-03 CN CN201410446937.1A patent/CN104421414B/en active Active
- 2014-09-05 US US14/478,441 patent/US9822876B2/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3304885A (en) * | 1965-04-30 | 1967-02-21 | Int Harvester Co | Piston pump lubrication structure |
| US3360933A (en) * | 1966-05-02 | 1968-01-02 | Int Harvester Co | Hydrostatic system charging and by-pass valve means |
| CN101421511A (en) * | 2006-04-12 | 2009-04-29 | 科默工业股份公司 | Hydraulic motor with axial pistons |
| CN101384823A (en) * | 2006-12-15 | 2009-03-11 | 株式会社川崎精机 | Inclined plate type piston pump or electric motor |
| CN102840299A (en) * | 2011-06-24 | 2012-12-26 | 罗伯特·博世有限公司 | Hydrostatic traction drive |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104421414A (en) | 2015-03-18 |
| US9822876B2 (en) | 2017-11-21 |
| US20150068395A1 (en) | 2015-03-12 |
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